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in Trigonometry by (25 points)
Q2 \( \sin 2 B=2 \sin B \) is true when \( B \) is equal to (a) \( 90^{\circ} \) (b) \( 60^{\circ} \) (c) \( 30^{\circ} \) (d) \( 0^{\circ} \)

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sin 90°=1

sin30°=1/2

sin 60°=√3/2

sin 0°=0

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