trigonometry

Related Questions

• $\frac{{{\sin }^{2}}A-{{\sin }^{2}}B}{\sin A\cos A-\sin B\cos B}=$

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• The angle of elevation of a stationary cloud from a point 2500 m above a lake is 15° and the angle of depression of its reflection in the lake is 45°. The height of cloud above the lake level is

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• The general solution of the trigonometric equation $\tan \theta =\cot \alpha $ is

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• If ${{p}_{1}},{{p}_{2}},{{p}_{3}}$ are altitudes of a triangle $ABC$ from the vertices $A,B,C$ and $\Delta $ the area of the triangle, then $p_{1}^{-2}+p_{2}^{-2}+p_{3}^{-2}$ is equal to

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• The angle of elevation of the top of a tower from a point A due south of the tower is $\alpha $and from a point B due east of the tower is $\beta $. If $AB =d$, then the height of the tower is

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