trigonometry

Related Questions

• ${{\cos }^{2}}A{{(3-4{{\cos }^{2}}A)}^{2}}+{{\sin }^{2}}A{{(3-4{{\sin }^{2}}A)}^{2}}=$

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• If the radius of the circumcircle of an isosceles triangle $PQR$ is equal to $PQ(=PR),$then the angle P is

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• If $\tan \alpha =\frac{1}{7},\ \tan \beta =\frac{1}{3},$then $\cos 2\alpha =$

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• If the sides of a right angled triangle be in A. P. , then their ratio will be

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• In $\Delta ABC,{{(a-b)}^{2}}{{\cos }^{2}}\frac{C}{2}+{{(a+b)}^{2}}{{\sin }^{2}}\frac{C}{2}=$

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