Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 1 - No. 32) | ExamPlay

Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 1 - No. 32)

If sin(120°) = 0.866, then sin(60°) is:

0.5

0.866

-0.866

-0.5

Explanation

Sin(180° - θ) = sin θ.

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