Question

The value of 9 cot²0-9 cosec²0 is .........
(A) 9 (B) 9 (C) 1 (D) - 1
​

Answer 1

Answer:

9

Step-by-step explanation:

we know that cot^2 theta-cosec^2 theta=1

therefore 9cot^2 theta-9cosec^2 theta

9(cot^2 theta-cot^2 theta=9(1)=9