trigonometry

Related Questions

• If ${{\tan }^{2}}\alpha {{\tan }^{2}}\beta +{{\tan }^{2}}\beta {{\tan }^{2}}\gamma +{{\tan }^{2}}\gamma {{\tan }^{2}}\alpha +2{{\tan }^{2}}\alpha {{\tan }^{2}}\beta {{\tan }^{2}}\gamma =1,$then the value of ${{\sin }^{2}}\alpha +{{\sin }^{2}}\beta +{{\sin }^{2}}\gamma $is

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• We are given b, c and $\sin B$ such that B is acute and $b<c\sin B$. Then

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• Two men are on the opposite side of a tower. They measure the angles of elevation of the top of the tower 45° and 30° respectively. If the height of the tower is 40 m, find the distance between the men

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• In a triangle with one angle of ${{120}^{o}}$ the lengths of the sides form an A. P. If the length of the greatest side is $7cm$ , the area of triangle is

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• ${{\cos }^{2}}\alpha +{{\cos }^{2}}(\alpha +120{}^\circ )+{{\cos }^{2}}(\alpha -120{}^\circ )$ is equal to

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