trigonometry

Related Questions

• In $\Delta ABC,\frac{\sin (A-B)}{\sin (A+B)}=$

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• 20 metre high flag pole is fixed on a 80 metre high pillar, 50 metre away from it, on a point on the base of pillar the flag pole makes and angle $\alpha $, then the value of $\tan \alpha $, is

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• If the angle of depression of a point A on the ground from the top of a tower be 30°, then the angle of elevation of the top of the tower from the point A will be

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• $\tan 20{}^\circ \tan 40{}^\circ \tan 60{}^\circ \tan 80{}^\circ =$

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• $\frac{a\cos A+b\cos B+c\cos C}{a+b+c}=$

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