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Math Help - area of triangle in inclined plane

  1. #1
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    Wink area of triangle in inclined plane

    Given an inclined plane with inclination angle \omega (sharp angle) and center O.
    Let points P (x_0,y_0) and Q (x_1,y_1) be in quadrant I. Determine the area of triangle OPQ !
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  2. #2
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    Quote Originally Posted by GTK X Hunter View Post
    Given an inclined plane with inclination angle \omega (sharp angle) and center O.
    Let points P (x_0,y_0) and Q (x_1,y_1) be in quadrant I. Determine the area of triangle OPQ !
    Convert to vectors in 3-D and use half the absolute value of the cross product of the vectors.

    CB
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    Quote Originally Posted by GTK X Hunter View Post
    Given an inclined plane with inclination angle \omega (sharp angle) and center O.
    Let points P (x_0,y_0) and Q (x_1,y_1) be in quadrant I. Determine the area of triangle OPQ !
    Inclined with angle \omega relative to what? An uninclined plane? And what is the "center" of a plane? Are points P and Q in the inclined plane or in the "uninclined" plane? Is O the origin? In which plane is the coordinate system?
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