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broughton

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In triangle RST, m<R = 5x -3, m<S = 3x + 2 and m<T = x+10. Find m<R

  • geometry - ,

    since R+S+T=180°

    5x-3 + 3x+2 + x+10 = 180
    9x +9 = 180
    9x = 171
    x = 19

    m<R = 5x-3 = 92°

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