Trigonometry

Two sides of a right triangle are 8, 15 and 17 units. if each side is doubled, how many sqare units will the area of the new triangle be?

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  1. Area of right triangle = 1 / 2 Area of a rectangle

    In this case:

    A1 = ( 1 / 2 ) * 8 * 15 = 20 units

    When each side is doubled:

    A2 = ( 1 / 2 ) * 2 * 8 * 2 * 15 = 4 * ( 1 / 2 ) * 8 * 15 = 4 A1

    A2 = 4 * 20 = 80 units

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  2. •Trigonometry - Bosnian, Sunday, September 9, 2012 at 1:07am

    Area of right triangle = 1 / 2 Area of a rectangle

    In this case:

    A1 = ( 1 / 2 ) * 8 * 15 = 60 units

    When each side is doubled:

    A2 = ( 1 / 2 ) * 2 * 8 * 2 * 15 = 4 * ( 1 / 2 ) * 8 * 15 = 4 A1

    A2 = 4 * 60 = 240 units

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  3. First answer is wrong.

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