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  • An altitude of a triangle is a line drawn from a vertex of the triangle perpendicular to the opposite side of the triang

    An altitude of a triangle is a line drawn from a vertex of the triangle perpendicular to the opposite side of the triangle.Find the equation of the altitude drawn from A(0,0) to the side formed by B(3,4) and C(5,-2).
    英語(yǔ)人氣:873 ℃時(shí)間:2020-05-29 19:47:32
    優(yōu)質(zhì)解答
    經(jīng)過(guò)B(3,4)和C(5,-2)的直線為:
    y=-3x+13
    所以垂直該直線的斜率為1/3
    過(guò)A(0,0)且斜率為1/3的直線為:
    y=x/3
    即:
    x-3y=0
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