Question

Find the measure of angle theta in the following when theta is acute:
2cos^2 5theta =1

Answer 1

Answer:

Find the measure of angle theta in the following when theta is acute:

2cos^2 5theta =1

Answer 2

Answer:

2 cos² 5 theta=1

cos 5 theta =√½ = 1/√2

cos 45°= 1/√2

cos 5 theta = cos 45°

5 theta = 45°

theta = 45/5

theta = 9