List of top Mathematics Questions on Trigonometric Ratios of Some Specific Angles asked in UP Board X

The value of $\cos 0^\circ$ will be:
If $\sin \theta = \cos \theta$, $0 \leq \theta \leq 90^\circ$, then the value of $\theta$ will be:
If $\tan 2A = 1$, where $2A$ is an acute angle, the value of $A$ will be:
The value of $\cos 60^\circ$ is: