trigonometry

Related Questions

• If in a triangle $ABC$ , $b=\sqrt{3}$ , $c=1$ and $B-C={{90}^{o}}$ then $\angle A$ is

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• If a triangle $PQR$ , $\sin P,\ \sin Q,\ \sin R$ are in A.P., then

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• If $\sin \theta =\frac{-4}{5}$ and $\theta $ lies in the third quadrant, then $\cos \frac{\theta }{2}=$

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• If the radius of the circumcircle of an isosceles triangle $PQR$ is equal to $PQ(=PR),$then the angle P is

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• If the area of a triangle ABC is $\Delta$, then ${{a}^{2}}\sin 2B+{{b}^{2}}\sin 2A$ is equal to

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