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Question

Find the joint equation of the passing through the origin having the inclinations 30o and 120o

A
y2x23=0
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B
y2+x23=0
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C
y22x23=0
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D
y2+2x23=0
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Solution

The correct option is A y2x23=0
Equation of line passing through the origin is of form y=mx
So the lines are
y=xtan30oy=x3yx3=0y=xtan120oy=x3y+x3=0
y2x23=0

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