Question

Help please. show work! see attachment.

Answer 1

$\cos \theta = 0.3642$

inverse cosine both sides
and the left side cosine will cancel out

$\cos^{-1} ( \cos \theta) = \cos^{-1} ( 0.3642) \\ \theta = \cos^{-1} ( 0.3642) \\ \theta = 1.1980$

answer is 1.1980 radians