## Tuesday, January 30, 2018

### Teaching Geometry - Practice Right Tri Trig #VNPS

I knew I had a lot in yesterday's lesson and I had today's lesson as a day of processing and practicing.  We were back at the board to do special right triangle trig with special right triangles and points on a plane.  I think it went okay.  I think they are getting the ratios now.

Here is the powerpoint lesson: Practice Right Triangle Lesson

Here are the board problems: Practice Trig Board

Here I asked them to draw and label a 30:60:90 triangle.  Then, I asked them to find sines and tangents: Here was same triangle, different student, different questions:
(These students wanted to be in the picture.) Then, I switched to the 45:45:90 triangle:  We also looked at writing inverse: Here we looked at both special triangles together: We were running out of time, but we graphed the magnetic graph and put a point on the coordinate plane to introduce finding the ratios given a point and the idea of a reference angle: Tomorrow: Law of Sines

This is a HEAVY unit!