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Math Help - Solving for radius in terms of two unknowns

  1. #1
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    Solving for radius in terms of two unknowns

    Here is the problem: S and T are the centers of their respective circles. The two circles are mutually tangent at pointo U. If segment RS=d, what is the radius of the smaller circle in terms of d and theta? The answer is d(cosx-sinx) (x is theta)

    I don't understand this problem at all. Where do I label R on the graph??
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  2. #2
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    Re: Solving for radius in terms of two unknowns

    Quote Originally Posted by benny92000 View Post
    Here is the problem: S and T are the centers of their respective circles. The two circles are mutually tangent at pointo U. If segment RS=d, what is the radius of the smaller circle in terms of d and theta? The answer is d(cosx-sinx) (x is theta)

    I don't understand this problem at all. Where do I label R on the graph??
    No picture given at all?
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  3. #3
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    Re: Solving for radius in terms of two unknowns

    None at all. It's quite possibly the book's mistake, but I just wanted to make sure..
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