Math

One angle of a triangle measures 100. the other two angles are in a ratio of 3:5. What are the measures of those two angles?

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asked by JM
  1. let the two unknown angles be 3x and 5x

    3x + 5x + 100 = 180
    ......

    take over

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    posted by Reiny
  2. i do not know the answer, i need help please

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    posted by dhruv
  3. 3x+5x+100=180
    -100 -100
    3x+5x=80
    8x=80
    x=10
    3(10)=30
    5(10)=50

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  4. thank you for your generous donation

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  5. let the ratio be 3x ,5x
    the sum of all angles of triangle = 180
    3x + 5x + 100 = 180
    8x = 180 -100
    x = 80/8
    x = 10
    now,
    3x = 3 x 10
    = 30
    5x = 5 x 10
    = 50

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