trigonometry

Related Questions

• A person is standing on a tower of height $15(\sqrt{3}+1)\,m$ and observing a car coming towards the tower. He observed that angle of depression changes from 30° to 45° in 3 sec. What is the speed of the car

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• In a triangle $ABC$ , if $B=3C$ , then the values of $\sqrt{\left( \frac{b+c}{4c} \right)}$ and $\left( \frac{b-c}{2c} \right)$ are

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• If $\tan A=\frac{1}{2},\tan B=\frac{1}{3},$then $\cos 2A=$

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• If $\tan \theta =\frac{a}{b},$then $\frac{\sin \theta }{{{\cos }^{8}}\theta }+\frac{\cos \theta }{{{\sin }^{8}}\theta }=$

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• Period of ${{\sin }^{2}}x$ is

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