Let triangle PQR be as shown, with P = (#1, #2, w3), Q = (v1, v2, y3), R = (z1, #2, z3). %3D R P ) (Use underscore to write a subscript, so a, would be typed "a_n") Which of the following expresses QR in terms of PR and PQ? O PR - PÓ O PŘ + PÓ PQ – PR O All of these Use the law of cosines to find the measure of ZQPR. Type or upload your work below. (This part will be graded later) Edit - Insert - Formats - BIU x, x' E E 3 E- E - 1 1 e 8 * <>

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A: Given:a→=-3,-2,3 and b→=-3,5,2We need to find 3a→+3b→.

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A: Solution

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