trigonometry

Related Questions

• In triangle $ABC$ , $(b+c)\cos A+(c+a)\cos B$ $+(a+b)\cos C=$

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• At a point on the ground the angle of elevation of a tower is such that its cotangent is 3/5. On walking 32 metres towards the tower the cotangent of the angle of elevation is 2/5. The height of the tower is

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• The solution of equation ${{\cos }^{2}}\theta +\sin \theta +1=0$ lies in the interval

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• A house of height 100 metres subtends a right angle at the window of an opposite house. If the height of the window be 64 metres, then the distance between the two houses is

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• In a $\Delta ABC,\,\,{{a}^{2}}\sin \,\,2C+{{c}^{2}}\sin 2A=$

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