# What is the equation of the line normal to # f(x)=tan^2x-3x# at # x=pi/3#?

##### 1 Answer

Mar 13, 2016

Equation of normal at

#### Explanation:

If

Hence normal should pass through

Slope of the curve at

Hence slope of tangent at

Hence, slope of normal is

Hence, equation of normal using point slope form is

or