Test 1 Try to solve the problems first and see if the answer you have chosen is correct. For detailed explanation click on Explain button. 1. Which of these coordinates is NOT a right handed system? c and d a and b Explain
2. Prove that the summation of square of direction cosines is 1. 3. If the cartesian coordinates of point A are (6,6,7), what is the vector connecting point O to point A in the following figure:

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