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What is the angle between the lines whose direction cosines are (–3/4,1/4 ,–√3/2) and (–3/4,1/4,√3/2) ?

+1 vote

asked Apr 3, 2019 in JEE by kratos

What is the angle between the lines whose direction cosines are (–3/4,1/4 ,–√3/2) and (–3/4,1/4,√3/2) ?

jee
jee mains
three dimensional geometry

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1 Answer

+6 votes

answered Feb 16, 2020 by kratos

Best answer

Let θ be the angle between them. Then

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