Consider the objective function g(oz, 18, y) = cos(oz) cos() cos(y) subject to the constraint that 0:, [3, y are the angles of a triangle. (a) Use Lagrange multipliers to maximize g. or: (b) Use the constraint to reduce the function g to a function of two independent variables. 901,13) = Use a computer algebra system to graph the surface represented by 9. Identify the maximum values on the graph. 0 ,6