Use the cofunction identities and odd-even identities to prove that

MATHEMATICS · Subjective · A Level · Mathematics · Trigonometry · Trigonometry

Problem

89. Use the cofunction identities and odd-even identities to prove that sin⁡(π−x)=sin⁡x\sin (\pi-x)=\sin x. [Hint: sin⁡(π−x)=sin⁡(π/2−(x−π/2))\sin (\pi-x)=\sin (\pi / 2-(x-\pi / 2)).]

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