Your goal in the sketch is to explore geometry that could enable you to get, say, w, the angle of elevation of the camera from the horizontal, as a function of (result of doing math stuff to) theta, the angle of the customer's ferris wheel radius from the vertical ferris wheel radius. Then use the chain rule to relate the rates of the variables with respect to time...
... is the chain rule. Straight continuous lines differentiate downwards (integrate up) with respect to t, and the straight dashed line similarly but with respect to the dashed balloon expression (the inner function of the composite which is subject to the chain rule).
By all means come back for help with the geometry, showing what you've done and where you're stuck.
Don't integrate - balloontegrate!
Balloon Calculus; standard integrals, derivatives and methods
Balloon Calculus Drawing with LaTeX and Asymptote!