# Please evaluate q 22?

##### 1 Answer
May 3, 2018

$\rightarrow a = x + \frac{1}{x} = \frac{{x}^{2} + 1}{x}$

If $x$ is any non-zero real number then the value $a$ will always be greater than or less than 1 but the value of $\sin \theta \mathmr{and} \cos \theta$ lies between $\left[- 1 , 1\right]$. So, the $\sin \theta \mathmr{and} \cos \theta$ can never be equal to $a$ in the case mentioned in the question.