trigonometry

Related Questions

• Period of $\frac{\sin \theta +\sin 2\theta }{\cos \theta +\cos 2\theta }$ is

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• If in a triangle ABC, angle C is ${{45}^{o}}$ , then $(1+\cot A)(1+\cot B)=$

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• $\cos 20{}^\circ \cos 40{}^\circ \cos 80{}^\circ =$

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• The value of $2({{\sin }^{6}}\theta +{{\cos }^{6}}\theta )-3({{\sin }^{4}}\theta +{{\cos }^{4}}\theta )+1$ is

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• If $\cos (\theta -\alpha ),\ \cos \theta $and $\cos (\theta +\alpha )$are in H.P., then $\cos \theta \sec \frac{\alpha }{2}$is equal to

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