Question

If cos A + cos²A = 1, then sin^2A + sin^4A is equal to
(a) –1
(6) 0
(c) 1​
(d)none of these

Answer 1

Answer:

answer is 1

Step-by-step explanation:

cos A+cos^2 A=1 ————(1)

cos A =1-cos^2 A

[sin^2 A=1- cos^2 A]

cos A= sin^2 A ———-(2)

Substitute value of cos A in Eq. (1)

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

sin^2 A + sin^4 A=1 [Proved]

Answer 2

HERE IS YOUR ANSWER

CHEERS

MARK BRAINLIEST ⭐