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AP EAMCET202422 May 2024Morning ShiftPhysicsMathematics in PhysicsActual

The angle made by the resultant vector of two vectors 2 i +3 j +4 k and 2 i -7 j -4 k with x -axis is

Options

  1. A60^
  2. B45^
  3. C90^
  4. D120^

Correct answer

B. 45^

Step-by-step solution

Resultant, R =(2 i +3 j +4 k )+(2 i -7 j -4 k ) Angle made by R with x axis is aligned & = R_X R = 4 (4)^2+(-4)^2 = 1 2 = 45^ & =45^ aligned

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