Last updated at May 29, 2018 by Teachoo

Transcript

Ex 10.1, 4 In Fig 10.6 (a square), identify the following vectors. (i) coinitial Two or more vectors are said to be cointial if they start from the same point. Here, 𝑎 and 𝑑 start from the same point P. So, 𝒂 and 𝒅 are cointial. Ex 10.1, 4 In Fig 10.6 (a square), identify the following vectors. (ii) Equal Two or more vectors are said to be equal if they have the • same magnitude • same direction. Since the given figure is a square, magnitudes of 𝑎 , 𝑏 , 𝑐 and 𝑑 are equal. And direction of 𝑏 is same as direction of 𝑑 Thus, 𝒃 and 𝒅 are equal. Ex 10.1, 4 In Fig (a square), identify the following vectors. (iii) Collinear but not equal Two of more vectors are said to be collinear if they are parallel to the same line. 𝑏 and 𝑑 are parallel to line 𝑚 ; hence collinear. But 𝑏 = 𝑑 from (ii) 𝑎 and 𝑐 are parallel to line 𝑛 ; hence collinear. But 𝑎 ≠ 𝑐 , since they are opposite in direction. ∴ 𝒂 and 𝒄 are collinear but not equal.

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.