What is the general solution for cos(A)= 5/9 ?

The general solution for cos(A)= 5/9 is A=0.98176…+2pin,A=2pi-0.98176…+2pin

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cos(A)= 5/9

cos (A) = \frac{5}{9}

A = 0.98176 \dots + 2 πn, A = 2 π - 0.98176 \dots + 2 πn

Degrees

A = 56.25101 \dots^{\circ} + 36 0^{\circ} n, A = 303.74898 \dots^{\circ} + 36 0^{\circ} n

Solution steps

cos (A) = \frac{5}{9}

Apply trig inverse properties

cos (A) = \frac{5}{9}

General solutions for

cos (A) = \frac{5}{9}

cos (x) = a \Rightarrow x = arccos (a) + 2 πn, x = 2 π - arccos (a) + 2 πn

A = arccos (\frac{5}{9}) + 2 πn, A = 2 π - arccos (\frac{5}{9}) + 2 πn

A = arccos (\frac{5}{9}) + 2 πn, A = 2 π - arccos (\frac{5}{9}) + 2 πn

Show solutions in decimal form

A = 0.98176 \dots + 2 πn, A = 2 π - 0.98176 \dots + 2 πn

cos (x) = 0.56

3 - cot^{2} (x) = 0

(- 4 cos (x) + 2 sin (x))^{2} + 12 sin^{2} (x) = 24

- arccos (x) + arctan (\frac{5}{12}) = 0

3 cos (x) + sin (x) = 1

What is the general solution for cos(A)= 5/9 ?
The general solution for cos(A)= 5/9 is A=0.98176…+2pin,A=2pi-0.98176…+2pin