trigonometry

Related Questions

• The area of the equilateral triangle which containing three coins of unity radius is

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• In $\Delta ABC$ , $\frac{\cos A}{a}+\frac{\cos B}{b}+\frac{\cos C}{c}=$

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• A ladder rests against a wall making an angle $\alpha $with the horizontal. The foot of the ladder is pulled away from the wall through a distance x, so that it slides a distance y down the wall making an angle$\beta $with the horizontal. The correct relation is

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

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• If a, b and c are the sides of a triangle such that ${{a}^{4}}+{{b}^{4}}+{{c}^{4}}=2{{c}^{2}}({{a}^{2}}+{{b}^{2}})$ then the angles opposite to the side C is

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