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The figure shows vectors A?  and B? . FindD?  = 3.90 A?  + B? . Express D?  in the form...

The figure shows vectors A?  and B? . FindD?  = 3.90 A?  + B? .

Express D?  in the form Dx, Dy, where the x and y components are separated by a comma.

D? =
0 0
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Answer #1

A = 2sin15 i + 2cos15 j

B = 4cos15 i - 4 sin15 j

hence, D = 3.9A + B = 5.88 i + 6.499 j

where i is in x direction and j is in y direction

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Answer #2

Physics is only applied Math.

Not sure of your question.

Break A and B into components. If we make x-axis the reference, the B is -15

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