Question

Please evaluate q 22?

Answer 1

`rarra=x+1/x=(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 `sintheta and costheta` lies between `[-1,1]`. So, the `sintheta and costheta` can never be equal to `a` in the case mentioned in the question.