How can I prove if l1 is as twice as steep as l2?

Question

How do I find the slope of each line using SohCahToa? I plan on using the unit circle but I am having difficulty calculating slope.

The slope is just arctan of the angle, if that's what's your problem. — Hans Lundmark, Oct 18 '18 at 21:25

score 0 · Answer 1 · answered Oct 18 '18 at 21:25

0

The slope is tangent of the angle made with the positive direction of the x-axis.

Thus you have $$ m_1 = \tan (\pi/6) \approx .5777$$ and $$ m_2 = \tan (\pi/3) \approx 1.7320 $$

answered Oct 18 '18 at 21:25

Mohammad Riazi-Kermani

68,728

score 0 · Answer 2 · answered Oct 18 '18 at 21:25

Suppose you go one step to the right, how many steps are you going upwards? That is the slope. Well you know that tan(30) = o/a. With o the height, aka how many steps you go upwards, and a is basically how many steps you go to the right, which we could take to be one. So the slope is simply tan(30 degrees), and of the other one tan(60 degrees).

How can I prove if l1 is as twice as steep as l2?

2 Answers2