trigonometry

Related Questions

• $ABCD$ is a rectangular field. A vertical lamp post of height 12m stands at the corner A. If the angle of elevation of its top from B is ${{60}^{o}}$ and from C is ${{45}^{o}}$, then the area of the field is

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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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• $\tan 75{}^\circ -\cot 75{}^\circ =$

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• The period of the function $\sin \left( \frac{\pi x}{2} \right)+\cos \left( \frac{\pi x}{2} \right)$ is

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