trigonometry

Related Questions

• The function $f(x)=\sin \frac{\pi x}{2}+2\cos \frac{\pi x}{3}-\tan \frac{\pi x}{4}$ is period with period

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• In a triangle $ABC$ , if $b+c=2a$ and $\angle A=60{}^\circ ,$ then $\Delta ABC$ is

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• If $x=y\cos \frac{2\pi }{3}=z\cos \frac{4\pi }{3}$, then $xy+yz+zx=$

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• If in a triangle $ABC,a=5,b=4,A=\frac{\pi }{2}+B$ , then C

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• An aeroplane flying horizontally 1 km above the ground is observed at an elevation of 60° and after 10 seconds the elevation is observed to be 30°. The uniform speed of the aeroplane in $km/h$ is

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