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# Angle Inclination of a Line - Problem 1

###### Norm Prokup

###### Norm Prokup

**Cornell University**

PhD. in Mathematics

Norm was 4th at the 2004 USA Weightlifting Nationals! He still trains and competes occasionally, despite his busy schedule.

Let's do a problem that involves the angle of inclination of a line. Line L passes through point -1,3 and makes an angle of 70 percent on the x axis, this is its angle of inclination, find its slope to the nearest hundredth.

Well slope m equals the tangent of the angle of inclination so in this case the tangent of 70 degrees. And I’m asked to find that to the nearest hundredth so I'll need a calculator. So I hit tangent of 70 and I get to the nearest hundredth 2.75. So approximately 2.75 and that’s going to be my slope. Find an equation for line L, well since I have a point that it passes through in the slope I could use point slope. So y minus 3 equals 2.75 x minus -1 x plus 1. That would be an equation for line L.

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###### Norm Prokup

PhD. in Mathematics, University of Rhode Island

B.S. in Mechanical Engineering, Cornell University

He uses really creative examples for explaining tough concepts and illustrates them perfectly on the whiteboard. It's impossible to get lost during his lessons.

Thiswas EXCELLENT! I am a math teacher and have been looking for an easy/logical way to explain the lateral area of a cone to my students and this was incredibly helpful, thank you very much!”

I just learned more In 3 minutes of polygons here than I do in 3 weeks in my math class”

Hahaha, his examples are the same problems of my math HW!”

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