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OpenStudy (he66666):
Determine the reduced row echelon form of A=[cosx sinx; -sinx cosx]. Answer: [1 0; 0 1]. How do you solve this question? I tried multiplying the first row by sinx then added that to the second row but I still didn't get the answer..
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OpenStudy (anonymous):
i don't see a second row? i see one row could you use the drawing tool?
OpenStudy (anonymous):
|dw:1337829699108:dw|
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