Question

this is prove that question
answer it plzz
​

Answer 1

Step-by-step explanation:

(cos²A -1)(cot²A+1)

=(-sin²A)(cosec²A)  (as,sin²A+cos²A=1,►cos²A-1=-sin²A  and cosec²A =1+cot²A)

= (-sin²A) ($\frac{1}{sin^2A}$)

= -1

Answer 2

Answer:

your answer attached in the photo