Embibe Experts Solutions for Chapter: Trigonometric Ratios and Identities, Exercise 1: KEAM 2019

The equation $\sin \left(e^x\right)=5^x+5^{-x}$ has exactly how many solutions?

If $f\left(x\right)=\mathrm{sinlog}x,$ then value of $f\left(xy\right)+f\left(\frac{x}{y}\right)-2f\left(x\right)\mathrm{coslog}y$ is equal to

If $12{\cot }^2\theta -31cosec\theta +32=0,$ then which of the following can be the value of $\sin \theta ?$

If $\sin x+\cos x=\frac{1}{5},$ then $\tan 2x$ is

If $\sin x+{\sin }^{2}x=1,$ then value of ${\cos }^{12}x+3{\cos }^{10}x+3{\cos }^{8}x+{\cos }^{6}x-1$ is equal to

The value of $\cos \frac{2\pi }{7}+\cos \frac{4\pi }{7}+\cos \frac{6\pi }{7}$ is equal to

$\sin {15}^o=$

$\frac{\sin A - \sin B}{\cos A +\mathrm{ cos}B}$ is equal to