trigonometry

Related Questions

• Maximum value of $f(x)=\sin x+\cos x$ is

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• $ABCD$ 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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• Period of $\cos (7x-5)$ is

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• If $\tan \alpha $ equals the integral solution of the inequality $4{{x}^{2}}-16x+15<0$ and $\cos \beta $ equals to the slope of the bisector of first quadrant, then $\sin (\alpha +\beta )\sin (\alpha -\beta )$is equal to

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• The value of $\sin {{47}^{o}}+\sin 61{}^\circ -\sin 11{}^\circ -\sin 25{}^\circ =$

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