Use the Pythagorean Identities to write the expression as an

Use the Pythagorean Identities to write the expression as an integer.

1

5

-1

-5

Use fundamental identities to write the first expression in terms of the second, for any acute angle .

tan , cos

Solution

We know that
csc^2(A) = 1 + cot^2(A)

So, cot^2(A) - csc^2(A) = -1

Notice here, A = 5beta is all.....

So,
cot^2(5B) - csc^2(5B) = -1

Ans = -1

Option C