[(sin 20°,- cos 20°),(sin 70°,cos 70°)] = ?(a) 1(b) -1(c) 0(d) 2 – InterviewSolution

1.	[(sin 20°,- cos 20°),(sin 70°,cos 70°)] = ?(a) 1(b) -1(c) 0(d) 2
Answer» Answer is (a) 1

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