trigonometry

Related Questions

• The value $\cos 105{}^\circ +\sin 105{}^\circ $is

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• The maximum value of $\sin \left( x+\frac{\pi }{6} \right)+\cos \left( x+\frac{\pi }{6} \right)$ in the interval $\left( 0,\frac{\pi }{2} \right)$is attained at

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• If $y=(1+\tan A)(1-\tan B)$ where $A-B=\frac{\pi }{4}$, then ${{(y+1)}^{y+1}}$ is equal to

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• If $4{{\sin }^{2}}\theta +2(\sqrt{3}+1)\cos \theta =4+\sqrt{3}$, then the general value of $\theta $is

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• If $\tan \theta =\frac{20}{21}$, $\cos \theta$ will be

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