Question

Given cos A = .25 find angle A in degrees. Round your answer to the nearest hundredth.

Answer 1

If Cos A = 0.25
⇒ A = cos⁻¹ (0.25)
A = 1.32 rads or 75.52°

Answer 2

You need to take the inverse of cosine, and multiply it by both sides to get "A", your variable by itself, and then multiply 0.25 by the inverse of cosine and you get 75.52 degrees. Or just plug it into your graphing calculator while your in degrees instead of radians, and hit 2nd, "cos",  plug in your angle, and hit enter. hope this helped :)