Question

Find the value of
cos²theta /sin²theta -1/sin²theta​

Answer 1

Answer:

let theta be a bcz it is confusing

by LCM

cos² a/sin²a-1/sin²a

cos²a-1/sin²a

we know that sin²a+cos²a=1

cos²a-1=-sin²a

substitute this

-sin²a/sin²a=-1

the answer is -1