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A, B, C

Geometry Level 3

In right angled triangle $ABC$ , $\angle ACB=90^\circ$ . If $2\tan A = \sin B$ , what does $\sin A$ equal?

\cos 30^\circ

\tan 60^\circ - 1

2 (\sin 60^\circ - \cos 45^\circ)

2\cos 45^\circ - \sin 90^\circ

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by Sensen Liong

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