Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$2 { \sin }^{ 2 } ( \frac{ \theta }{ 2 } )$$

Evaluate

$-\cos(\theta )+1$

Differentiate w.r.t. θ

$\sin(\theta )$

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