Ex 10.3, 1 - Chapter 10 Class 12 Vector Algebra

Last updated at August 2, 2026 by

Ex 10.3, 1 - Find angle between two vectors a, b with magintudes root3

Ex 10.3, 1 - Chapter 10 Class 12 Vector Algebra - Part 2

Take a fresh quiz. Then take another.
Every attempt is a new AI-adaptive Teachoo quiz with 3 questions, selected from your answers, mistakes, and progress.
Remove Ads

Transcript

Ex 10.3, 1 Find the angle between two vectors š‘Ž āƒ— and š‘ āƒ— with magnitudes āˆš3 and 2 ,respectively having š‘Ž āƒ— ā‹…š‘ āƒ— = āˆš6 . š‘Ž āƒ— . š‘ āƒ— = "|" š‘Ž āƒ—"|" "|" š‘ āƒ—"|" cos Īø where Īø is the angle between š‘Ž āƒ— and š‘ āƒ— Given, |š‘Ž āƒ— | = āˆš3, |š‘ āƒ— | = 2 and š‘Ž āƒ—. š‘ āƒ— = āˆš6 Putting values in formula š‘Ž āƒ—. š‘ āƒ— = |š‘Ž āƒ— ||š‘ āƒ— | cos Īø āˆš6 = āˆš3 Ɨ 2 Ɨ cos Īø āˆš3 Ɨ āˆš2 = āˆš3 Ɨ āˆš2 Ɨ āˆš2 Ɨ cos Īø cos Īø = 1/āˆš2 Īø = š…/šŸ’ Thus, the angle š‘Ž āƒ— and š‘ āƒ— is šœ‹/4

Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh is an IIT Kanpur graduate and has been teaching for 16+ years. At Teachoo, he breaks down Maths, Science and Computer Science into simple steps so students understand concepts deeply and score with confidence.

Many students prefer Teachoo Black for a smooth, ad-free learning experience.