Answers

2014-11-13T11:55:58+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
For OA
slope = 1
angle = arctan 1 = 45 (no need to calculate, see the diagram)
x-coordinate of point A = √50 cos(45) = √50×(1/√2) = √25 = 5
y-coordinate of point A = √50 sin(45) = √50×(1/√2) = √25 = 5
Point A is (5,5)

for OB
slope = 7
angle = arctan 7 = 81.91  (no need to calculate, see the diagram)
x-coordinate of point A = √50 cos(81.91)= 1
y-coordinate of point A = √50 sin(81.91) = 7
Point B is (1,7)

Slope of line AB = (7-5)/(1-5) = 2/(-4) = -1/2
0