trigonometry

Related Questions

• If $\alpha $ is a root of $25{{\cos }^{2}}\theta +5\cos \theta -12=0$, $\pi /2<\alpha <\pi $, then $\sin 2\alpha $is equal to

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• If $2\sin \theta +\tan \theta =0$, then the general values of $\theta $ are

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• Let $f(x)=\cos px+\sin x$ be periodic, then p must be

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• In $\Delta ABC$ , $(b-c)\cot \frac{A}{2}+(c-a)\cot \frac{B}{2}+(a-b)$ $\cot \frac{C}{2}$ is equal to

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• Which of the following number(s) is/are rational

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