trigonometry

Related Questions

• If $\sin A+\sin B=C,\cos A+\cos B=D,$then the value of $\sin (A+B)=$

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• If $x,\,y,\,z$are perpendicular drawn $a,\,b$ and $c$, then the value of $\frac{bx}{c}+\frac{cy}{a}+\frac{az}{b}$will be

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• If $\sin x+{{\sin }^{2}}x=1$, then the value of ${{\cos }^{12}}x+3{{\cos }^{10}}x+3{{\cos }^{8}}x+{{\cos }^{6}}x-2$ is equal to

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• The shadow of a tower is found to be 60 metre shorter when the sun’s altitude changes from ${{30}^{o}}$ to ${{60}^{o}}$. The height of the tower from the ground is approximately equal to

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• If $\cos 2\theta +3\cos \theta =0$, then the general value of $\theta $ is

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