Solve the following equation for 0 ≤ ѳ< π

Question

cos ѳ= 1/2
choices:
A) {pie/3}
B) {-3pie/4, 3pie/4}
C) {-pie/4, pie/4}
D) {pie/4, 3pie/4, 5pie/4, 7pie/4}

Answer 1

The equation given is cos ѳ= 1/2. The values of ѳ for 0 ≤ ѳ < π where cosine is equal to 1/2 are:

ѳ = π/3, 5π/3

Therefore, the correct answer is A) {π/3}.