1 Answer | Add Yours
The slope of the tangent = `dy/dx` at (pi,-1).
`dy/dx = -sinx-cosx`
The slope of the tangent is equal to 1.
The equation of the tangent is `y-(-1)=1(x-pi)` .
that is `x-y=pi+1`
We’ve answered 318,989 questions. We can answer yours, too.Ask a question