Question: 6. Problem 3.4.4. If Q and Q2 are orthogonal matrices, so that QTQ = I, show that Q1Q2 is also orthogonal. If Q is

6. Problem 3.4.4. If Q and Q2 are orthogonal matrices, so that

6. Problem 3.4.4. If Q and Q2 are orthogonal matrices, so that QTQ = I, show that Q1Q2 is also orthogonal. If Q is rotation through and Q2 is rotation through o, what is Q1Q2? Can you find the trigonometric identities for sin(0+) and cos(0+o) in the matrix multiplication Q1Q2?

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