What is the general solution for cos(A)= 3/4 ?

The general solution for cos(A)= 3/4 is A=0.72273…+2pin,A=2pi-0.72273…+2pin

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cos(A)= 3/4

cos (A) = \frac{3}{4}

A = 0.72273 \dots + 2 πn, A = 2 π - 0.72273 \dots + 2 πn

Solution steps

cos (A) = \frac{3}{4}

Apply trig inverse properties

A = arccos (\frac{3}{4}) + 2 πn, A = 2 π - arccos (\frac{3}{4}) + 2 πn

Show solutions in decimal form

A = 0.72273 \dots + 2 πn, A = 2 π - 0.72273 \dots + 2 πn

3 cos (x) = 2 cot (x)

5 cos (7 θ) = 0

- 8 tan (y) = 0

2 cos^{2} (θ) + cos (θ) = 0, 0 \leq θ < 2 π

3 cos (2 x) + sin (2 x) = 0

What is the general solution for cos(A)= 3/4 ?
The general solution for cos(A)= 3/4 is A=0.72273…+2pin,A=2pi-0.72273…+2pin