Question

(1-2 sin^2 A)^2÷
cos^4 A - sin^4 A = 2 cos^2 A - 1​

Answer 1

Answer:1-2sin^2A = cos^2 A - Sin^2A . ( Replace 1= sin^2 A + Cos^2 A) . In denominator factorise using a^2- b^2 formula. Cancel out the common term. Use cos^2 A + sin^2 A = 1 again. You will get the desired answer

Step-by-step explanation:

Answer 2

hope it helps you........

see the attachment for answer