デジタル形式で段階的に解決 ありがとう!! SOLVE STEP BY STEP IN DIGITAL FORMAT b) Prove, using vectors, that P (2, -3, 1), Q (-5, 1, 7) and R (6, 1, 3) are the vertices of a right triangle and calculate its area. (You can locate the points in space, and plot the vectors RP, RQ and PQ) R=(6,1,3) • Q=(-5,1,7) OP=(2,-3,1) f=10.05 g=6 ⚫h=11.7 PR=4 • RQ = • PQ = 4 a=90° 90° -10

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