# What is the slope of the line normal to the tangent line of #f(x) = cosx*sin(2x-pi/6) # at # x= pi/3 #?

##### 1 Answer

Jul 25, 2017

#### Explanation:

Let's first find the derivative of the function using the product rule :

The slope of the tangent line is

So now the slope of the normal line to the tangent is :