Let vector B = 8.8 m, 75 degrees counterclockwise from the vertical.

a) Find the x- and y-components of vector B in the normal coordinate system (where x is a horizontal line and y is a vertical line...both intersect each other).

b) Find the x- and y-components of vector B in the coordinate system where x and y are tilted such that x is 30 degrees above a 180 degree plane and y intersects x at 90 degrees.

Sorry, it's hard to explain.

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  1. a. A = 90 + 75 = 165 deg.,CCW.

    B = (8.8m,165deg.).
    X = hor. = 8.8cos165 = -8.50m.
    Y = ver. = 8.8sin165 = 2.28m.

    b. X = 8.8cos(180-30) = -7.62m.
    Y = 8.8sin(90-30) = 7.62m.

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  2. Thanks :)

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