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The inverse of [(- cosθ,sinθ),(-sinθ,cosθ)] is (a) [(- cosθ,sinθ),(-sinθ,cosθ)](b) [(cosθ,sinθ),(-sinθ,cosθ)](c) [(cosθ,-sinθ),(sinθ,- cosθ)](d) None of these |
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Answer» Answer is (b) [(cosθ,sinθ),(-sinθ,cosθ)] |
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