Okay so I have established that I need to find the height of the boom gate with respect to time at theta = pi/3.
I've set out an equation to find the answer which is dh/dt = d(theta)/dt x dh/d(theta). I know that d(theta)/dt = 0.05 from the question, however I don't know how to find d(theta)/dt. I know I need to find an equation and then flip it. But I need help on that bit.
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