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24 February, 11:42

Find two unit vectors that make an angle of 60° with v = ‹6, 8›. Give your answers correct to three decimal places.

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  1. 24 February, 14:00
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    We are given with an angle 60° with v = (6, 8)

    Then x^2+y^2=1

    Also a. v=a v cos60

    a. v=1*10*0,5=5

    Since a. v=6x+8y, so

    6x+8y=5 (2)

    The equations are

    x^2+y^2=1 and 6x+8y=5

    We substitute 2 to 1, x^2 + [ (5-6x) / 8]^2 = 1

    x then is equal to 0.9928 and y is equal to 0.12
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