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Popular Trigonometry >

11.33=1.59cos(0.99(x-182))+12.14

Solution

11.33 = 1.59 cos (0.9 9^{\circ} (x - 18 2^{\circ})) + 12.14

Solution

x = 18 2^{\circ} + \frac{4000 n}{11} + \frac{2000 \cdot 2.10532 \dots}{198 0 ^{\circ}}, x = 18 2^{\circ} + \frac{4000 n}{11} - \frac{2000 \cdot 2.10532 \dots}{198 0 ^{\circ}}

Radians

x = \frac{91 π}{90} + \frac{2000 \cdot 2.10532 \dots}{11 π} + \frac{4000}{11} n, x = \frac{91 π}{90} - \frac{2000 \cdot 2.10532 \dots}{11 π} + \frac{4000}{11} n

Solution steps

11.33 = 1.59 cos (0.9 9^{\circ} (x - 18 2^{\circ})) + 12.14

Switch sides

1.59 cos (0.9 9^{\circ} (x - 18 2^{\circ})) + 12.14 = 11.33

Multiply both sides by

100

1.59 cos (0.9 9^{\circ} (x - 18 2^{\circ})) + 12.14 = 11.33

To eliminate decimal points, multiply by 10 for every digit after the decimal pointThere are

2

digits to the right of the decimal point, therefore multiply by

100

1.59 cos (0.9 9^{\circ} (x - 18 2^{\circ})) \cdot 100 + 12.14 \cdot 100 = 11.33 \cdot 100

Refine

159 cos (0.9 9^{\circ} (x - 18 2^{\circ})) + 1214 = 1133

159 cos (0.9 9^{\circ} (x - 18 2^{\circ})) + 1214 = 1133

Move

1214

to the right side

159 cos (0.9 9^{\circ} (x - 18 2^{\circ})) + 1214 = 1133

Subtract

1214

from both sides

159 cos (0.9 9^{\circ} (x - 18 2^{\circ})) + 1214 - 1214 = 1133 - 1214

Simplify

159 cos (0.9 9^{\circ} (x - 18 2^{\circ})) = - 81

159 cos (0.9 9^{\circ} (x - 18 2^{\circ})) = - 81

Divide both sides by

159

159 cos (0.9 9^{\circ} (x - 18 2^{\circ})) = - 81

Divide both sides by

159

\frac{159 cos ( 0.9 9 ^{\circ} ( x - 18 2 ^{\circ} ) )}{159} = \frac{- 81}{159}

Simplify

\frac{159 cos ( 0.9 9 ^{\circ} ( x - 18 2 ^{\circ} ) )}{159} = \frac{- 81}{159}

Simplify

\frac{159 cos ( 0.9 9 ^{\circ} ( x - 18 2 ^{\circ} ) )}{159} : cos (0.9 9^{\circ} (x - 18 2^{\circ}))

\frac{159 cos ( 0.9 9 ^{\circ} ( x - 18 2 ^{\circ} ) )}{159}

Divide the numbers:

\frac{159}{159} = 1

= cos (0.9 9^{\circ} (x - 18 2^{\circ}))

Simplify

\frac{- 81}{159} : - \frac{27}{53}

\frac{- 81}{159}

Apply the fraction rule:

\frac{- a}{b} = - \frac{a}{b}

= - \frac{81}{159}

Cancel the common factor:

3

= - \frac{27}{53}

cos (0.9 9^{\circ} (x - 18 2^{\circ})) = - \frac{27}{53}

cos (0.9 9^{\circ} (x - 18 2^{\circ})) = - \frac{27}{53}

cos (0.9 9^{\circ} (x - 18 2^{\circ})) = - \frac{27}{53}

Apply trig inverse properties

cos (0.9 9^{\circ} (x - 18 2^{\circ})) = - \frac{27}{53}

General solutions for

cos (0.9 9^{\circ} (x - 18 2^{\circ})) = - \frac{27}{53}

cos (x) = - a \Rightarrow x = arccos (- a) + 36 0^{\circ} n, x = - arccos (- a) + 36 0^{\circ} n

0.9 9^{\circ} (x - 18 2^{\circ}) = arccos (- \frac{27}{53}) + 36 0^{\circ} n, 0.9 9^{\circ} (x - 18 2^{\circ}) = - arccos (- \frac{27}{53}) + 36 0^{\circ} n

0.9 9^{\circ} (x - 18 2^{\circ}) = arccos (- \frac{27}{53}) + 36 0^{\circ} n, 0.9 9^{\circ} (x - 18 2^{\circ}) = - arccos (- \frac{27}{53}) + 36 0^{\circ} n

Solve

0.9 9^{\circ} (x - 18 2^{\circ}) = arccos (- \frac{27}{53}) + 36 0^{\circ} n : x = 18 2^{\circ} + \frac{4000 n}{11} + \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

0.9 9^{\circ} (x - 18 2^{\circ}) = arccos (- \frac{27}{53}) + 36 0^{\circ} n

Multiply both sides by

2000

0.9 9^{\circ} (x - 18 2^{\circ}) = arccos (- \frac{27}{53}) + 36 0^{\circ} n

Multiply both sides by

2000

2000 \cdot 0.9 9^{\circ} (x - 18 2^{\circ}) = 2000 arccos (- \frac{27}{53}) + 2000 \cdot 36 0^{\circ} n

Simplify

2000 \cdot 0.9 9^{\circ} (x - 18 2^{\circ}) = 2000 arccos (- \frac{27}{53}) + 2000 \cdot 36 0^{\circ} n

Simplify

2000 \cdot 0.9 9^{\circ} (x - 18 2^{\circ}) : 198 0^{\circ} (x - 18 2^{\circ})

2000 \cdot 0.9 9^{\circ} (x - 18 2^{\circ})

Multiply fractions:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{11 \cdot 36000 0 ^{\circ}}{2000} (x - 18 2^{\circ})

Cancel the common factor:

2000

= (x - 18 2^{\circ}) \cdot 198 0^{\circ}

Simplify

2000 arccos (- \frac{27}{53}) + 2000 \cdot 36 0^{\circ} n : 2000 arccos (- \frac{27}{53}) + 72000 0^{\circ} n

2000 arccos (- \frac{27}{53}) + 2000 \cdot 36 0^{\circ} n

Multiply the numbers:

2000 \cdot 2 = 4000

= 2000 arccos (- \frac{27}{53}) + 72000 0^{\circ} n

198 0^{\circ} (x - 18 2^{\circ}) = 2000 arccos (- \frac{27}{53}) + 72000 0^{\circ} n

198 0^{\circ} (x - 18 2^{\circ}) = 2000 arccos (- \frac{27}{53}) + 72000 0^{\circ} n

198 0^{\circ} (x - 18 2^{\circ}) = 2000 arccos (- \frac{27}{53}) + 72000 0^{\circ} n

Divide both sides by

198 0^{\circ}

198 0^{\circ} (x - 18 2^{\circ}) = 2000 arccos (- \frac{27}{53}) + 72000 0^{\circ} n

Divide both sides by

198 0^{\circ}

\frac{198 0 ^{\circ} ( x - 18 2 ^{\circ} )}{198 0 ^{\circ}} = \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{72000 0 ^{\circ} n}{198 0 ^{\circ}}

Simplify

x - 18 2^{\circ} = \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{4000 n}{11}

x - 18 2^{\circ} = \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{4000 n}{11}

Move

18 2^{\circ}

to the right side

x - 18 2^{\circ} = \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{4000 n}{11}

Add

18 2^{\circ}

to both sides

x - 18 2^{\circ} + 18 2^{\circ} = \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{4000 n}{11} + 18 2^{\circ}

Simplify

x - 18 2^{\circ} + 18 2^{\circ} = \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{4000 n}{11} + 18 2^{\circ}

Simplify

x - 18 2^{\circ} + 18 2^{\circ} : x

x - 18 2^{\circ} + 18 2^{\circ}

Add similar elements:

- 18 2^{\circ} + 18 2^{\circ} = 0

= x

Simplify

\frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{4000 n}{11} + 18 2^{\circ} : 18 2^{\circ} + \frac{4000 n}{11} + \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

\frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{4000 n}{11} + 18 2^{\circ}

Group like terms

= 18 2^{\circ} + \frac{4000 n}{11} + \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

Could not simplify further

= 18 2^{\circ} + \frac{4000 n}{11} + \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

x = 18 2^{\circ} + \frac{4000 n}{11} + \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

x = 18 2^{\circ} + \frac{4000 n}{11} + \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

x = 18 2^{\circ} + \frac{4000 n}{11} + \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

Solve

0.9 9^{\circ} (x - 18 2^{\circ}) = - arccos (- \frac{27}{53}) + 36 0^{\circ} n : x = 18 2^{\circ} + \frac{4000 n}{11} - \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

0.9 9^{\circ} (x - 18 2^{\circ}) = - arccos (- \frac{27}{53}) + 36 0^{\circ} n

Multiply both sides by

2000

0.9 9^{\circ} (x - 18 2^{\circ}) = - arccos (- \frac{27}{53}) + 36 0^{\circ} n

Multiply both sides by

2000

2000 \cdot 0.9 9^{\circ} (x - 18 2^{\circ}) = - 2000 arccos (- \frac{27}{53}) + 2000 \cdot 36 0^{\circ} n

Simplify

2000 \cdot 0.9 9^{\circ} (x - 18 2^{\circ}) = - 2000 arccos (- \frac{27}{53}) + 2000 \cdot 36 0^{\circ} n

Simplify

2000 \cdot 0.9 9^{\circ} (x - 18 2^{\circ}) : 198 0^{\circ} (x - 18 2^{\circ})

2000 \cdot 0.9 9^{\circ} (x - 18 2^{\circ})

Multiply fractions:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{11 \cdot 36000 0 ^{\circ}}{2000} (x - 18 2^{\circ})

Cancel the common factor:

2000

= (x - 18 2^{\circ}) \cdot 198 0^{\circ}

Simplify

- 2000 arccos (- \frac{27}{53}) + 2000 \cdot 36 0^{\circ} n : - 2000 arccos (- \frac{27}{53}) + 72000 0^{\circ} n

- 2000 arccos (- \frac{27}{53}) + 2000 \cdot 36 0^{\circ} n

Multiply the numbers:

2000 \cdot 2 = 4000

= - 2000 arccos (- \frac{27}{53}) + 72000 0^{\circ} n

198 0^{\circ} (x - 18 2^{\circ}) = - 2000 arccos (- \frac{27}{53}) + 72000 0^{\circ} n

198 0^{\circ} (x - 18 2^{\circ}) = - 2000 arccos (- \frac{27}{53}) + 72000 0^{\circ} n

198 0^{\circ} (x - 18 2^{\circ}) = - 2000 arccos (- \frac{27}{53}) + 72000 0^{\circ} n

Divide both sides by

198 0^{\circ}

198 0^{\circ} (x - 18 2^{\circ}) = - 2000 arccos (- \frac{27}{53}) + 72000 0^{\circ} n

Divide both sides by

198 0^{\circ}

\frac{198 0 ^{\circ} ( x - 18 2 ^{\circ} )}{198 0 ^{\circ}} = - \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{72000 0 ^{\circ} n}{198 0 ^{\circ}}

Simplify

x - 18 2^{\circ} = - \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{4000 n}{11}

x - 18 2^{\circ} = - \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{4000 n}{11}

Move

18 2^{\circ}

to the right side

x - 18 2^{\circ} = - \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{4000 n}{11}

Add

18 2^{\circ}

to both sides

x - 18 2^{\circ} + 18 2^{\circ} = - \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{4000 n}{11} + 18 2^{\circ}

Simplify

x - 18 2^{\circ} + 18 2^{\circ} = - \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{4000 n}{11} + 18 2^{\circ}

Simplify

x - 18 2^{\circ} + 18 2^{\circ} : x

x - 18 2^{\circ} + 18 2^{\circ}

Add similar elements:

- 18 2^{\circ} + 18 2^{\circ} = 0

= x

Simplify

- \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{4000 n}{11} + 18 2^{\circ} : 18 2^{\circ} + \frac{4000 n}{11} - \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

- \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}} + \frac{4000 n}{11} + 18 2^{\circ}

Group like terms

= 18 2^{\circ} + \frac{4000 n}{11} - \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

Could not simplify further

= 18 2^{\circ} + \frac{4000 n}{11} - \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

x = 18 2^{\circ} + \frac{4000 n}{11} - \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

x = 18 2^{\circ} + \frac{4000 n}{11} - \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

x = 18 2^{\circ} + \frac{4000 n}{11} - \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

x = 18 2^{\circ} + \frac{4000 n}{11} + \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}, x = 18 2^{\circ} + \frac{4000 n}{11} - \frac{2000 arccos ( - \frac{27}{53} )}{198 0 ^{\circ}}

Show solutions in decimal form

x = 18 2^{\circ} + \frac{4000 n}{11} + \frac{2000 \cdot 2.10532 \dots}{198 0 ^{\circ}}, x = 18 2^{\circ} + \frac{4000 n}{11} - \frac{2000 \cdot 2.10532 \dots}{198 0 ^{\circ}}

Graph

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