JEE Main 2021PhysicsMathematics in PhysicsEasyMCQ

JEE Main 2021 — Mathematics in Physics Question with Solution

JEE Main 2021 (26 Aug Shift 2)

Question

The angle between vector (A→) and (A→-B→) is :

Choose an option

Show full solutionCorrect option: B
Correct answer
Btan-13 B2 A-B

Step-by-step explanation

tanϕ=Bsin60°A-Bcos60°

ϕ=tan-1Bsin60°A-Bcos60°=tan-13B2A-B

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About this question

This is a previous-year question from JEE Main 2021, covering the Mathematics in Physics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.