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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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Answer» sin 90°=1 sin30°=1/2 sin 60°=√3/2 sin 0°=0 |
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