What is the equation of the line tangent to # f(x)=x/secx # at # x=pi/3#?
1 Answer
Apr 11, 2018
Since we are talking about a tangent this means we'll want to find the gradient at that point.
Explanation:
Using product rule:
Gradient at
Now the equation of the tangent can be found using this gradient and the point at which the tangent is
Using point-gradient formula:
This gives you: