Straight Line Question 324
Question: Equation of a straight line on which length of perpendicular from the origin is four units and the line makes an angle of $ 120^{o} $ with the x?axis, is [MNR 1986]
Options:
A) $ x\sqrt{3}+y+8=0 $
B) $ x\sqrt{3}-y=8 $
C) $ x\sqrt{3}-y=8 $
D) $ x-\sqrt{3}\ y+8=0 $
Correct Answer: A $ \therefore $ Line is $ y=-\sqrt{3}x+c $
Þ $ \sqrt{3}x+y=c $ Now $ \frac{c}{2}=|4|\Rightarrow c=\pm 8\Rightarrow x\sqrt{3}+y=\pm 8 $ .
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Answer:
Solution:
BETA
