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Jan3-11, 07:58 AM
I feel like i've worked this one out every which way and I'm not seeing a relationship where i get something that is equivalent to the h*r^2 in terms of theta, unless that's where I'm going wrong?
You aren't going to find an expression purely in terms of theta. You'll need to use the fixed radius R as well. You've already got one relationship. r/h=tan(theta). That let's you get rid of one variable. You just need one more. What have you found?