Class 11MathematicsTrigonometric FunctionsFundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles
EasyIf $A$ and $B$ are supplementary angles,then $\sin^{2} \frac{A}{2} + \sin^{2} \frac{B}{2} =$
- A$1$
- B$\frac{1}{3}$
- C$0$
- D$\frac{1}{2}$
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If $\theta$ lies in the first quadrant and $5 \tan \theta = 4$,then $\frac{5 \sin \theta - 3 \cos \theta}{\sin \theta + 2 \cos \theta}$ is equal to
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