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An isosceles triangle is a triangle with two sides that are the same length. Find the measure of the two equal angles to the nearest degree in a triangle that has sides of length 5ft., 5ft., and 6ft.

  • PreCalc -

    In your isosceles triangle create a right-angled triangle with a base of 3 and hypotenuse of 5

    then cos(theta) = 3/5
    theta = 53.13ยบ

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