Question

show that a lines segment OA and OB are perpendicular , where A, B, and O are the points (5,4) , (4,-5) and (0,0).

Answer 1

☆☆heya your answer is here☆☆

Join AB,OA,OB
In tri.ABO
AB2=OA2+OB2
(5-4)2+(4-(-5))2=
(0-5)2+(0-4)2+
(0-4)2+(0-(-5))2
1+81=
25+16+16+25
82=82
hence OA is
perpendicular to OB

Answer 2

Answer:

your anwer

Step-by-step explanation:

Join AB,OA,OB

In tri.ABO

AB2=OA2+OB2

(5-4)2+(4-(-5))2=

(0-5)2+(0-4)2+

(0-4)2+(0-(-5))2

1+81=

25+16+16+25

82=82

hence OA is

perpendicular to OB