trigonometry

Related Questions

• In a$\Delta ABC,$ if $b=20,c=21$ and $\sin A=3/5$ , then $a=$

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• If $A$ lies in the second quadrant and $3\tan A+4=0,$ the value of $2\cot A-5\cos A+\sin A$is equal to

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• The solution of equation ${{\cos }^{2}}\theta +\sin \theta +1=0$ lies in the interval

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• The general solution of the trigonometric equation $\tan \theta =\cot \alpha $ is

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• ${{\cos }^{2}}\alpha +{{\cos }^{2}}(\alpha +120{}^\circ )+{{\cos }^{2}}(\alpha -120{}^\circ )$ is equal to

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