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Two vectors, r  and vector s lie in the xy plane. Their magnitudes are 4.26 and 7.75...

Two vectors, r  and vector s lie in the xy plane. Their magnitudes are 4.26 and 7.75 units, respectively, and their directions are 345o and 63.0o, respectively, as measured counterclockwise from the positive x axis. What are the values of (a) vector r ⋅ vector s and (b) | vector r × vector s |? show units

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SIopL 63 Vech 6.86 unite Ato 4.2 6x 다、IS sin(78)

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