What is the equation of the line tangent to #f(x)=4secx–8cosx# at #x=3#?
1 Answer
Dec 10, 2017
Equation of line tangent can be formed by
We know that slope of line tangent to
So, to do this question, we have to find
When
and the y-coordinate of this point is
We get all the information we need and we can plug them into the equation.
Equation of line tangent at