Questions
Angle between the lines whose direction ratios are a,b,c and is
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By Expert Faculty of Sri Chaitanya
a
300
b
600
c
450
d
900
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Correct option is D
a1a2+b1b2+c1c2=0a(b-c)+b(c-a)+c(a-b)=ab-ac +bc-ca+ca-ab=0
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The dr’s of two lines are given by , . Then the angle between the lines is
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