1. The problem statement, all variables and given/known data I have a graph with the functions f(x)=sin2x and g(x)=cosx. The 2 graphs intersect at point B. They want me to find the co-ordinates of B. 2. Relevant equations 3. The attempt at a solution Must I equate the two graphs? sin2x = cosx 2x = 90-x, 3x = 90, x=30 or 2x = 180-(90-x), x=90 It doesnt seem right, is their any other steps?