i. Let A= (1,0,1), B= (2,1,0) and C= (2,2,1) be points R^3. We consider the triangle ABC, and call the angle A and B the
Posted: Wed May 11, 2022 9:27 pm
i. Let A= (1,0,1), B= (2,1,0) and C= (2,2,1) be points R^3. We
consider the triangle ABC, and call the angle A and B the angle at
B. Give cos a and cos b
ii. Let A, B, C, D be a parallelogram with equal sides
(AB=BC=CD=DA). Show that the diagonals AC and BD are
orthogonal.
consider the triangle ABC, and call the angle A and B the angle at
B. Give cos a and cos b
ii. Let A, B, C, D be a parallelogram with equal sides
(AB=BC=CD=DA). Show that the diagonals AC and BD are
orthogonal.