Question

please give the answer​

Answer 1

Answer:

1

Step-by-step explanation:

sinA + sin^2A = 1

sinA = 1 - sin^2A => sinA = cos^2A

cos^2A + cos^4A=cos^2A+(cos^2A)^2

= sinA + (sinA)^2= sinA + sin^2A= 1

option (b) is correct

Answer 2

here is your answer

hope it helps......