trigonometry

Related Questions

• The value of $\cos A-\sin A$when $A=\frac{5\pi }{4},$ is

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• In a $\Delta ABC$ , $b=2,C={{60}^{o}},c=\sqrt{6}$ , then $a =$

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• If $\alpha ,\beta ,\gamma $ are angles of a triangle, then ${{\sin }^{2}}\alpha +{{\sin }^{2}}\beta +{{\sin }^{2}}\gamma -2\cos \alpha \cos \beta \cos \gamma $ is

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• The general solution of ${{\sin }^{2}}\theta \sec \theta +\sqrt{3}\tan \theta =0$ is

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• A tower subtends an angle $\alpha$ at a point A in the plane of its base and the angle of depression of the foot of the tower at a point l meters just above A is $\beta$. The height of the tower is

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