Geometry and Trigonometry practice question

Answer: A. √3/2

In a 30°-60°-90° triangle with hypotenuse 2, the side opposite 60° is √3. So sin 60° = √3/2.

Why the other answers are wrong

B. 1/2

1/2 is sin 30° (or cos 60°).

C. √2/2

√2/2 is sin 45°.

D. 1

1 is sin 90°.

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