MATHS QUESTION, please help!?
what angle does a line passing through (1,5) and (3.10) make woth the positive direction of the x axis
please help, my tests tommorow!
- Pi R SquaredLv 79 years agoBest Answer
Th slope of the line through (1,5) and (3,10) is (10 - 5)/(3 - 1) = 5/2.
So, it goes up 5 and 2 to the right so the:
tan A = 5/2
a = tan^-1(5/2) = 68.2º <==ANSWER
I hope that helps!! :-)
- Here2HelpLv 69 years ago
Given the points:
(x1, y1) = (1, 5)
(x2, y2) = (3, 10)
The angle that a line passing through these points make with the positive direction of the x axis would be = arctangent (y2 - y1)/(x2 - x1).
arctangent (10 - 5)/(3 - 1) = arctangent (5/2) = 68.19859051 degrees
- 9 years ago
Lets just say this.
To find the angle, you must use the trig laws.
Find a point. Lets say the point is (3,10) and lets make a triangle.
The base would be 3, (x=3) and the height would be 10 (y=10).
The angle proportional to the x-axis would be tan^-1(10/3). (TOA)
- henry_yang67Lv 69 years ago
the slope of the line is
(10-5)/(3-1) = 2.5
so the angle is arc tan (2.5) ~= 68 degrees