Answer:
i believe it's 31°. not messing around either
Use a calculator called symbolab.com 0-0
Answer:
E
Explanation:
well, process of elimination
When I factor[ 2cos (square) - 5cos -3], I get (2cos + 1)(cos - 3). 2cos + 1 = 0, 2cos = -1, cos = -0.5,. Using inv cos on calculator, I get 120 degree related angle.
