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Ex 10.2

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Ex 10.2, 3 Important You are here

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Ex 10.2, 18 (MCQ) Important

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Last updated at March 22, 2023 by Teachoo

Ex 10.2, 3 Write two different vectors having same direction.Two vectors have the same directions if their direction cosines are same Let π β = 1π Μ + 1π Μ + 1π Μ and π β = 2π Μ + 2π Μ + 2π Μ Magnitude of π β = β(12+12+12) |π β | = β(1+1+1) = β3 Direction cosines of π β are (1/β3,1/β3,1/β3) Magnitude of π β = β(22+22+22) |π β | = β(4+4+4) = 2β(3 ) Directions cosines of π β are (2/(2β3),2/(2β3),2/(2β3)) = (1/β3,1/β3,1/β3) As Direction cosines of π β and π β are same, they have the same direction.