Solve COS There are two solutions, A and B, with A < B.

Question

asked Jul 21, 2024 64.7k views

1 Answer

Kjeld Flarup · Answer 1 · 2024-07-27T04:23:42+0000

Answer:

A = 0.850

B = 5.433

Explanation:

cos⁻¹(0.66) = 0.850

A = 0.850

2π - 0.850 = 5.433

B = 5.433

Cosine function is + in the 1st and 4th quadrants.

To find the second solution (B), subtract the reference angle 0.850 from 2π