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Math Help - Triangle Area

  1. #1
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    Triangle Area

    Prove that the area of triangle ABC is given by the formula:

    Area of triangle ABC = 1/2 * AB * AC * sin(angle BAC)
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  2. #2
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    Code:
            b *
             /|\
            / |  \
           /  |h   \
          /   |      \
         /    |        \
      a*----------------*c
    (First time using this code to draw diagrams)

    Lets use this triangle as an example.

    h = height

    Area of a triangle = 1/2 * base * height

    Base = length AC
    Height = length AB * sin (angle BAC)

    Therefore area of triangle = 1/2 * AC * AB * sin(angle BAC)

    I had to prove this when I was learning trigonometry as well.
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