(b) Let A = (1,0,1), B = (2,1,0) and C = (2.2, 1) be points in R3. We consider the triangle ABC, and call o the angle at
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(b) Let A = (1,0,1), B = (2,1,0) and C = (2.2, 1) be points in R3. We consider the triangle ABC, and call o the angle at
(b) Let A = (1,0,1), B = (2,1,0) and C = (2.2, 1) be points in R3. We consider the triangle ABC, and call o the angle at A and B the angle at B. Give cosa and cos 3.
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