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Starting from the right-hand side (RHS) of the identity
Simplify $2\sin\left(2\right)\cos\left(2\right)$ using the trigonometric identity: $\sin(2x)=2\sin(x)\cos(x)$
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$2\sin\left(2\right)\cos\left(2\right)$
Learn how to solve trigonometric identities problems step by step online. Prove the trigonometric identity sin(4)=2sin(2)cos(2). Starting from the right-hand side (RHS) of the identity. Simplify 2\sin\left(2\right)\cos\left(2\right) using the trigonometric identity: \sin(2x)=2\sin(x)\cos(x). Multiply 2 times 2. Any expression multiplied by 1 is equal to itself.