Consider the parametric curve given by:
Calculate the equation of the tangent to this curve at the point given by t=π/4, in the form y=mx+c.
The tangent is given by y=
The Attempt at a Solution
the answer that I got was y=-0.145x+0.547 but it says that it is wrong
I did this by subbing in the value of t for x and y and also the differential of x and y and then calculating the slope
but I am not sure what I have done wrong