Q11. If 13 sin  = 5, find the value of $\frac{\left(5 \sin \theta - 2 \cos \theta \right)}{\tan \theta }$
Q12. If $cot \theta = \frac{1}{\sqrt{3}}, show that \left(\frac{1-{\cos }^2\theta }{2-{\sin }^2\theta }\right)=\frac{3}{5}$
Q13. If $sec \theta = \frac{13}{5}, show that \left(\frac{2 \sin \theta -3 \cos \theta }{4 \sin \theta - 9 \cos \theta }\right)=3.$
Q14. If $3 \tan \theta = 4, show that \left(\frac{3 \sin \theta +2 \cos \theta }{3 \sin \theta - 2 \cos \theta }\right)=3.$