trigonometry

Related Questions

• If$\frac{2\sin \alpha }{\{1+\cos \alpha +\sin \alpha \}}=y,$then $\frac{\{1-\cos \alpha +\sin \alpha \}}{1+\sin \alpha }=$

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• Two vertical poles of equal heights are 120 m apart. On the line joining their bottoms, A and B are two points. Angle of elevation of the top of one pole from A is 45° and that of the other pole from B is also 45°. If AB = 30 m, then the height of each pole is

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• If $\tan \theta =\frac{-4}{3},$then$\sin \theta =$

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• If in triangle $ABC,\frac{{{a}^{2}}-{{b}^{2}}}{{{a}^{2}}+{{b}^{2}}}=\frac{\sin (A-B)}{\sin (A+B)}$ , then the triangle is

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• In any triangle ABC, the value of $a({{b}^{2}}+{{c}^{2}})\cos A+b({{c}^{2}}+{{a}^{2}})\cos B+c({{a}^{2}}+{{b}^{2}})\cos C$ is

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