Hello

The equation of the tangent to the curve of a function at a point is . In your case, (origin) and hence the equation of the tangent you're looking for is

Using a graph is a good idea. The solutions of are the intersection points of the curves of the two functions and . How many such point(s) can you find ?b) Using a graph or otherwise, state the number of solutions to the equation sinx = x

I see the symbol .[I'm not sure if this is only my computer but those signs there on the last line should be pi's because on my computer some weird symbol is coming up]