Question

Prove the following (cos^2 A-1) (cot^2 A+1)=-1




plzzz....help me ..............​

Answer 1

Answer:

cos 2a + 1/( cosec2A)

( 1+ cot2A= cosec2A)

cos2A+1/1/ sin2 A (cosec2a= 1/sin2a)

cos2A + sin2A =1

Answer 2

Answer:

dud i know but i want you to answer

Step-by-step explanation:

the answer is ( sin 2a =1)