Question

5sin2theta+cos2theta then find sintheta​

Answer 1

Answer:

5sin^ 2 θ+cos  ^2 θ=2

⇒5sin ^2 θ+(1−sin^2  θ)=2[∵sin ^2  θ+cos  ^2  θ=1]

⇒5sin^2  θ+1−sin  ^2  θ=2

⇒4sin^2  θ=2−1

⇒4sin^2θ=1

⇒sin^2  θ= 1 /4

⇒sinθ=± 1 /2

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