IB skill practice

Prove identities with tangent half angle substitution

Use tangent half-angle substitution to prove and transform trigonometric expressions.

Paper 1, Paper 2 5 marks Difficulty 5

Prove identities with tangent half angle substitution - verification line

Let \(t=\tan\frac{x}{2}=1/2\). Using the tangent half-angle substitution, enter \(\sin x\).

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