Explain in at most two sentences why writing as is a useful step when finding the…

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

Problem

Explain in at most two sentences why writing 75∘75^\circ as 45∘+30∘45^\circ + 30^\circ is a useful step when finding the exact value of sin⁡75∘\sin 75^\circ.

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