AP EAMCET · Maths · Straight Lines
The equation of the base of an equilateral triangle is and one vertex is , then the length of the side of the triangle is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Let, ∆ABC, be the triangle, with side BC as x+y=2, and vertex A as 2, -1. The length of perpendicular from the point x1, y1 to the line ax+by+c=0 is ax1+by1+ca2+b2. Hence, the length of altitude AM=2-1-212+12 ⇒AM=12. We know that, in an equilateral…
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