Exercise

The value of $\frac{2\tan 30°}{1-{\tan }^{2}30°}$ is equal to 

If $\tan \left(A-B\right)=\frac{1}{\sqrt{3}}$ and $\sin A=\frac{1}{\sqrt{2}},$ where $A \text{and} B$ are acute angles, then the value of $B$ is

${\sec }^2{60}^o-1=$

If $\sin \theta -\cos \theta =0$, then the value of $({\sin }^4\theta +{\cos }^4\theta )$ is

$5{\tan }^{2}A-5{\sec }^{2}A+1$ is equal to

If $4\tan \theta =3$, then $\left(\frac{4\sin \theta -\cos \theta }{4\sin \theta +\cos \theta }\right)$ is equal to

If $\cot \theta =\frac{7}{8},$ then value of $\frac{(1+\cos \theta )(1-\cos \theta )}{(1-\sin \theta )(1+\sin \theta )}$ is

Value of $(\sin 60°\cos 30°-\cos 60°\sin 30°)$ is