trigonometry

Related Questions

• A balloon is observed simultaneously from three points A, B and C on a straight road directly under it. The angular elevation at B is twice and at C is thrice that of A. If the distance between A and B is 200 metres and the distance between B and C is 100 metres, then the height of balloon is given by

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• In $\Delta ABC,$ ${{a}^{2}}+{{b}^{2}}+{{c}^{2}}=ac+ab\sqrt{3},$ then triangle is

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• In $\Delta ABC$ , $\frac{\cos A}{a}+\frac{\cos B}{b}+\frac{\cos C}{c}=$

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• In a triangle $PQR$ , $\angle R=\frac{\pi }{2}.$ If $\tan \left( \frac{P}{2} \right)$ and $\tan \left( \frac{Q}{2} \right)$ are the roots of the equation $a{{x}^{2}}+bx+c=0(a\ne 0).$ then

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• In $\Delta ABC$ , if $\angle C={{90}^{o}}$ ,$\angle A={{30}^{o}}$ , $c=20$ , then the values of a and b are

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