Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesFundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles
EasyFind the degree measure corresponding to the following radian measure (Use $\pi = \frac{22}{7}$): $\frac{7 \pi}{6}$ (in $^{\circ}$)
- A$210$
- B$220$
- C$200$
- D$190$
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If $x \neq 0$,then $\frac{\sin (\pi+x) \cos (\frac{\pi}{2}+x) \tan (\frac{3 \pi}{2}-x) \cot (2 \pi-x)}{\sin (2 \pi-x) \cos (2 \pi+x) \operatorname{cosec}(-x) \sin (\frac{3 \pi}{2}+x)} = $
If $\frac{\cos A}{3} = \frac{\cos B}{4} = \frac{1}{5}$,$-\frac{\pi}{2} < A < 0$,and $-\frac{\pi}{2} < B < 0$,then the value of $2 \sin A + 4 \sin B$ is
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