Question

find the distance of each of the following points from the origin
A(5,-12) , B(-5,5) , C(-4,-6)

Answer 1

Let the distance of A, B & C from the origin be respectively a, b, c.
a^2 = 5^2 + (-12)^2 ......... eqn (1)
b^2 = (-5)^2 + 5^2 ..........eqn (2)
c^2 = (-4)^2 + (-6)^2 ........eqn (3)
Reason : All the three triangles are right angled triangles & we know,
hypotenuse^2 = perpendicular^2 + base^2
By solving, we can get,
a = 13 from eqn (1)
b = 7. 07 from eqn (2)
c = 7. 21 from eqn (3)
Hope it'll help u...