The axis of a light in a lighthouse is tilted. When the light points east, it is inclined upward at 2 degree(s). When it points north, it is inclined upward at 10 degree(s). What is its maximum angle of elevation?

Question

anonymous · Answer

are you aware of basic trig ratios? like sin, cos ,tan?

anonymous · Answer

I have got |gradient of f|=sqrt[(2sec^2 2x)^2+(10sec^2 10y)^2] but I don't know how to do next

anonymous · Answer

is it possible to pictorially describe your question?

anonymous · Answer

I'm not sure...I don;t know which number I can plug in for x and y