Trigonometrymedium · Past Paper
Simplify: 2 cos² θ - 1.
Asin 2θ
Bcos 2θ
Ctan 2θ
D1
✓ Correct Answer: B — cos 2θ
This is one of the standard forms for the double angle formula of cosine.
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✓ Correct Answer: B — cos 2θ
This is one of the standard forms for the double angle formula of cosine.
Share this question