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Popular >

sin(30)+sin(30)

Solution

sin (3 0^{\circ}) + sin (3 0^{\circ})

Solution

1

Solution steps

sin (3 0^{\circ}) + sin (3 0^{\circ})

Use the following trivial identity:

sin (3 0^{\circ}) = \frac{1}{2}

sin (3 0^{\circ})

sin (x)

periodicity table with

36 0^{\circ} n

cycle:

x 0 3 0^{\circ} 4 5^{\circ} 6 0^{\circ} 9 0^{\circ} 12 0^{\circ} 13 5^{\circ} 15 0^{\circ} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x 18 0^{\circ} 21 0^{\circ} 22 5^{\circ} 24 0^{\circ} 27 0^{\circ} 30 0^{\circ} 31 5^{\circ} 33 0^{\circ} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

= \frac{1}{2}

= \frac{1}{2} + \frac{1}{2}

Simplify

\frac{1}{2} + \frac{1}{2} : 1

\frac{1}{2} + \frac{1}{2}

Apply rule

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

= \frac{1 + 1}{2}

Add the numbers:

1 + 1 = 2

= \frac{2}{2}

Apply rule

\frac{a}{a} = 1

= 1

= 1

Popular Examples

6 sin (8 0^{\circ})

sin (\frac{π}{15})

2 cos^{2} (\frac{π}{3}) - 1

- cot (\frac{3 π}{4})

cos((5pi)/4-(5pi)/6)

cos (\frac{5 π}{4} - \frac{5 π}{6})

Frequently Asked Questions (FAQ)

What is the value of sin(30)+sin(30) ?
The value of sin(30)+sin(30) is 1