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4. If IĀ+BI=1Ā 1=1B | then angle between Aand B will be(1) 90°(2) 120°(3) 0°(4) 60° |
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Answer» √ A² + A² + 2A²Cos THETHA = A 2A² + 2A²Cos thetha = A² 2A²Cos thetha = - A² Cos thetha = - 1/2 Thetha = 120 Degrees Ans... |
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