The value of $\tan ( - 945^\circ )$ is
$-1$
$-2$
$-3$
$-4$
If $\sin \theta + \cos \theta = 1$, then $\sin \theta \cos \theta = $
If $\tan \theta = - \frac{1}{{\sqrt {10} }}$ and $\theta $ lies in the fourth quadrant, then $\cos \theta = $
$(m + 2)\sin \theta + (2m - 1)\cos \theta = 2m + 1,$ if
The radius of the circle whose arc of length $15\,cm$ makes an angle of $3/4$ radian at the centre is .....$cm$
Find the degree measures corresponding to the following radian measures (Use $\pi=\frac{22}{7}$ ).
$\frac{5 \pi}{3}$