Question:
$\mathrm{ABCD}$ is a trapezium such that $\mathrm{AB}$ and $\mathrm{CD}$ are parallel and $\mathrm{BC} \perp \mathrm{CD}$. If $\angle \mathrm{ADB}=\theta, \mathrm{BC}=$ $p$ and $C D=q$, then $A B$ is equal to
Correct Option: 1,
Solution:
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