Question

Please solve this question.

Answer 1

Explanation:

$\sf{cos(90 - (50 -θ)) - sin(50 -θ) + \frac{cos^240 + cos^250}{sin^240 + sin^250} }$

$\sf{sin(50 - θ) - sin(50 - θ) + \frac{cos^240 + cos^250}{sin^240 + sin^250} }$

$\sf{0 + \frac{sin^250 + cos^250}{sin^240 + cos^240 } = 1is\:your\:answer. }$