trigonometry

Related Questions

• If $x=a{{\cos }^{3}}\theta ,y=b{{\sin }^{3}}\theta ,$then

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• If $A+B+C=\pi ,$then $\cos \,\,2A+\cos \,\,2B+\cos \,\,2C=$

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• If $x+y+z={{180}^{o}},$ then $\cos 2x+\cos 2y-\cos 2z$ is equal to

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• A flag-post 20m high standing on the top of a house subtends an angle whose tangent is $\frac{1}{6}$ at a distance 70 m from the foot of the house. The height of the house is

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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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