Question

Find Q, if cos(Q + 60) = 0.0872, where 0 degrees < Q < 90 degrees

Answer 1

Q = 25°

Explanation:

Given

cos(Q + 60) = 0.0872, then

Q + 60 =
`cos^(-1)` (0.0872 ) = 85° ( nearest degree )

Q = 85° - 60° = 25°