Simplify the expression.

-2 (csc^2θ - cot^2θ) - 1

The value of given expression is - 3

Step-by-step explanation:

Given expression as:

- 2 (cosec²Ф - cot²Ф) - 1

Now, ∴ cosec²Ф = 1 + cot²Ф

SO, - 2 (1 + cot²Ф - cot²Ф) - 1

Or, - 2 (1) - 1

Or, - 2 - 1 = - 3

Hence the value of given expression is - 3 Answer