(22) In \( a \) trianglo \( A B C \) if : \( 3 \sin A=2 \sin B=4 \sin C \), thon \( n: b: c= \) \( \begin{array}{lll}\text { (ii) } A: 6: 3 & \text { (b) } 3: 4: 6 & \text { (c) } 6: 4: 3\end{array} \)

\( [ \sin ( - \theta ) + \cos ( 360 - \theta ) ] [ \cos ( 90 - \theta ) + \frac { \sin \theta } { \tan \theta } ] \)

The least positive coterminal angle is: A. \( 659^{\circ} \) B. \( 481^{\circ} \) C. \( 478^{\circ} \) D. \( 448^{\circ} \)

iven that \( \cos \left(\frac{1}{2} x+10^{\circ}\right)-\sin \left(x+20^{\circ}\right)=0 \) find \( \tan x \)

8. \( \tan \left(270^{\circ}+\theta\right) \) संग बराबर हुने त्रिकोणामताय Write the trigonometrical ratio which is equal to \( \tan \left(270^{\circ}+\theta\right) \).

a) \( \frac{\sin 3 \alpha}{\sin \alpha}-\frac{\cos 3 \alpha}{\cos \alpha} \)