Question: I started by taking the pq and pr vectors getting and My result after doing the cross product is 45i+54j+30k. What are the next steps
I started by taking the pq and pr vectors getting and My result after doing the cross product is 45i+54j+30k. What are the next steps I need to take in order to solve.

Compute the cosine of the angle between the plane through P = (6, 0, 0), Q = (0, 5, 0), and R = (0, 0,9) and the yz-plane, defined as the angle between their normal vectors. P (Use symbolic notation and fractions where needed.) cos(0) = 129 V 5841 Incorrect
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