Question

please solve this question​

Answer 1

Step-by-step explanation:

Given that :-

Cosec 50° Cosec 40°

=>Cosec (90°-40°) Cosec(90°-50°)

we know that Cosec(90°-A)=SecA

=>Sec40°Sec50°

It may be like Cosec50° Cos40°

=>Cosec(90°-40°)Cos 40°

=>Sec40° Cos 40°

=>Cos 40°/Cos 40°

=>1

The power of Cosec 50° Cos 40°=1²=1