It’s so nice to see the sun out today! I think it’s been almost a full week of rain throughout our travels for Thanksgiving. Rain just makes it that much harder to get up and at ’em.

My * regular Precalc* students are just beginning to

*using all of the different trig identities. I’ve found that students either LOVE these (it’s like solving a puzzle!) or HATE them (why isn’t there just a formula to follow for each one??) I’m sure I’ll be posting a few more videos in the upcoming weeks to show all of the different types because they usually teach you one group of formulas at a time (double angles, half angles, sum and difference, etc). These examples just show the beginning basics including the pythagorean identities.*

**simplify trig expressions**

My * honors Precalc* students are working with the

*and*

**law of sines****. The most challenging problems are the applications which involve navigation and surveying. I’ve worked through a**

*law of cosines**which I hope will help you “navigate” your way through all of these types of word problems 😉*

**surveying example**

Until tomorrow…let’s hope this sunshine continues!!