The direction cosines of any normal to the xy-plane are (A) 1,0,0 (B) – InterviewSolution

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1.	The direction cosines of any normal to the xy-plane are (A) 1,0,0 (B) 0,1,0 (C) 1,1,0 (D) 0,01A. 1, 0, 0B. 0, 1, 0C. 0, 0, 1D. 1, 1, 0
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