Question

Plss see the attachment

Answer 1

Answer:

$∫ \cos ^{ - 1} (sinx) \: dx \\ \\ ∫ {cos}^{ - 1} cos(x - 90) \: dx \\ \\ ∫x - 90 \: dx \\ \\ integrate \: w.r.t.x \\ \\ \frac{ {x}^{2} }{2} - 90x + c$