List of top Mathematics Questions on Trigonometry asked in AP ECET EIE

$\frac{d}{dx} [\tan^{-1} x] =$

The value of $\sin 45^\circ$ is

In a $\Delta ABC$, if $a=13, b=14$ and $c=15$ then the value of $\tan \left(\frac{A}{2}\right)$ is

In a $\Delta ABC$, $\sum a^2 \cos(B - C) =$

Principle value of $\cot^{-1}(-1)$ is

$\sin 15^\circ =$

If $2 \cos \theta = x + \frac{1}{x}$ then $2 \cos 3\theta =$

In any $\Delta ABC$, $\tan \frac{B+C}{2} =$

In a triangle $\Delta ABC$, the value of $\cos \left(\frac{B+C}{2}\right)$ in terms of angle $A$.

If $\tan A = \frac{4}{3}$ then the value of $\cos 2A$ is

If $-1 \leq x \leq 1$, then $\cos^{-1} x + \sin^{-1} x =$