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If a,b,c are the sides of Delta ABC and...

If a,b,c are the sides of `Delta ABC` and the lines `ax+by+c=0, bx+cy+a=0, cx+ay+b=0` are concurrent, then `Delta ABC ` is

A

right angled

B

equilateral

C

isosceles

D

scalene

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The correct Answer is:
B
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AAKASH SERIES-STRAIGHT LINES-PRACTICE SHEET (EXERCISE-III Problems on point of intersection of lines and concurrency of lines) (LEVEL- I Straight Objective Type Question)
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  10. If a^2+b^2-c^2-2ab, then the point of concurrency of family of straigh...

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