Question

What are all solutions to the equation 2 cos Θ = 1 for 0 ≤ Θ ≤ 2pi? Round to the nearest hundredth.

θ ≈ 1.32, 4.97
θ ≈ 1.05, 5.24
θ ≈ 0.52, 2.62
θ ≈ 0.05, 2.89,

Answer 1

1.a

2.d

3.c

4.a

5.b

Explanation:

Answer 2

2 cos theta = 1 Cos theta = 1/2 Inverse of cos (1/2) = 60 and 300 in degrees. In radians we have 60 * pi/180 = 1.05 300 * pi/180 = 5.24