trigonometry

Related Questions

• In a $\Delta ABC$ $a,\ c,A$ are given and ${{b}_{1}},\ {{b}_{2}}$ are two values of the third side b such that ${{b}_{2}}=2{{b}_{1}}$. Then $\sin A=$

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• In a $\Delta ABC,$ if $\frac{\sin A}{\sin C}=\frac{\sin (A-B)}{\sin (B-C)},$ then ${{a}^{2}},\ {{b}^{2}},\ {{c}^{2}}$ are in

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• The value of $\sin \frac{\pi }{16}\sin \frac{3\pi }{16}\sin \frac{5\pi }{16}\sin \frac{7\pi }{16}$is

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• If $\sin 2\theta =\cos 3\theta $and $\theta $is an acute angle, then $\sin \theta $is equal to

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• $\frac{\sin (B+A)+\cos (B-A)}{\sin (B-A)+\cos (B+A)}=$

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