Question

If the equations ax² + bx + c = 0 and 5x² + 12x + 13 = 0 have a common root, where a, b and c are the sides of a triangle ABC, then

• A. DABC is acute angled
• B. DABC is right angled
• C. DABC is isosceles
• D. DABC is right angled isosceles

Answer 1

Answer: (B)

DABC is right angled

Answer 2

$\frac{a}{5}$= $\frac{b}{12}$= $\frac{c}{13}$= l

Ž a = 5l, b = 12l, c = 13l