Question 9If sinA+sin2A=1, then the value of (cos2A+cos4A) is(A) 1(B)

1.	Question 9If sinA+sin2A=1, then the value of (cos2A+cos4A) is(A) 1(B) 12(C) 2(D) 3
Answer» Question 9 If $s i n A + s i n^{2} A = 1$ , then the value of $(c o s^{2} A + c o s^{4} A)$ is (A) $1$ (B) $\frac{1}{2}$ (C) $2$ (D) $3$

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