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Scalar product - Defination
Scalar product - Defination
Last updated at Aug. 11, 2021 by Teachoo
Misc 16 If ΞΈ is the angle between two vectors π β and π β , then π β β π β β₯ 0 only when (A) 0 < π< π/2 (B) 0 β€ π β€π/2 (C) 0 < π < Ο (D) 0 β€π β€ π Given, π β. π β β₯ 0 |π β | |π β | cos ΞΈ β₯ 0 Assuming |π β | β 0 and |π β | β 0 cos ΞΈ β₯ 0/|π β ||π β | cos ΞΈ β₯ 0 β΄ 0 β€ ΞΈ β€ π/2 So, (B) is the correct answer