Question

Cos^-1(cos 43°) PLEASE HELP ME

Answer 1

$\cos^{-1}(\cos 43^{\circ})=43^{\circ}\\\\\\\text{In radians,}~~ \dfrac{43\pi}{180}$

Answer 2

$\: \: \: \: \:$

$= \cos(1) \cos(43°) \\ \\ in \: \: alternate \: \: form \: \\ \\ = 0.395152$

Step-by-step explanation:

$\cos( - 1) ( \cos(43°))$

• simplify the expression usiNg the symmetry of trigonometry

$= \cos(1) \cos(43°) \\ \\ \\ or \: \: in \: \: alternate \: \: form \\ \\ = 0.395152$

hope it helps