A circular wire of radius $7\,cm$ is cut and bend again into an arc of a circle of radius $12\,cm$. The angle subtended by the arc at the centre is ......$^o$
$50$
$210$
$100$
$60$
The value of $\tan ( - 945^\circ )$ is
Find the values of other five trigonometric functions if $\cot x=\frac{3}{4}, x$ lies in third quadrant.
If $\tan \theta = \frac{{20}}{{21}},$ cos$\theta$ will be
If $A = 130^\circ $ and $x = \sin A + \cos A,$ then
If $\sin \theta + {\rm{cosec}}\theta = {\rm{2}}$, then ${\sin ^2}\theta + {\rm{cose}}{{\rm{c}}^{\rm{2}}}\theta = $