Question

cos theta cos(90-theta) / tan(90-theta) +cos theta sin(90-theta)​

Answer 1

Answer:

Given,

cos∅.cos(90°-∅)/(tan(90°-∅)) + cos∅.sin(90°-∅)

=> cos∅.sin∅/cot∅ + cos∅.cos∅

=> cos∅.sin∅/(cos∅/sin∅) + cos²∅

=> sin²∅+ cos²∅

= 1 Ans.