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Last updated at April 21, 2021 by Teachoo

Transcript

Ex 10.3, 1 Find the angle between two vectors ๐ โ and ๐ โ with magnitudes โ3 and 2 ,respectively having ๐ โ โ ๐ โ = โ6 . ๐ โ . ๐ โ = "|" ๐ โ"|" "|" ๐ โ"|" cos ฮธ where ฮธ is the angle between ๐ โ and ๐ โ Given, |๐ โ | = โ3, |๐ โ | = 2 and ๐ โ. ๐ โ = โ6 Putting values in formula ๐ โ. ๐ โ = |๐ โ ||๐ โ | cos ฮธ โ6 = โ3 ร 2 ร cos ฮธ โ3 ร โ2 = โ3 ร โ2 ร โ2 ร cos ฮธ cos ฮธ = 1/โ2 ฮธ = ๐ /๐ Thus, the angle ๐ โ and ๐ โ is ๐/4

Ex 10.3

Ex 10.3, 1
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Ex 10.3, 2

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Ex 10.3, 18 (MCQ) Important

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.