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Starting from the right-hand side (RHS) of the identity
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$\sin\left(x\right)^2$
Learn how to solve problems step by step online. Prove the trigonometric identity (1+cos(x))(1-cos(x))=sin(x)^2. Starting from the right-hand side (RHS) of the identity. Applying the trigonometric identity: \sin\left(\theta \right)^2 = 1-\cos\left(\theta \right)^2. Calculate the power \sqrt{1}. Any expression multiplied by 1 is equal to itself.