CUET Preparation Today
If $cos^2 θ+cos^4θ=1,$ then the value of $sinθ +sin^2θ$ is : |
0 $\frac{1}{2}$ 2 1 |
1 |
cos²θ + cos4θ = 1 cos4θ = 1 - cos²θ { using sin²θ + cos²θ = 1 } cos4θ = sin²θ and cos²θ = sinθ Now, sinθ + sin²θ = cos²θ + cos4θ = 1 { given :- cos²θ + cos4θ = 1 } |
