math

if the sides are 18 24 and 30 what kind of angle is it

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asked by josh
  1. note that it is just a scaled-up 3-4-5 triangle

    You can check for a right angle using

    30^2 = 18^2 + 24^2

    if c^2 = a^2+b^2 it is a right angle
    if c^2 < a^2+b^2, it is acute, otherwise obtuse

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    posted by Steve

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