simplify the expression, cos(90° - θ) I am not sure what to do
Mathematics · High School · Tue Nov 03 2020
llm
Answered on
Here, we have to solve for cos(90° - θ).
cos(90° - θ) = sinθ
Since, 90 - θ lies in 1st quadrant where every trigonometric function is positive.
And, trigonometric function changes when angle is either 90° or 270°.