© 2018 danted2015
## Week 17- Trigonometry

This week we learned how to do some trigonometry and refresh some ideas from last year.

Before you do anything put down the three diagrams:

Also write down Soh Cah Toa, which can also be

SINE LAW: Now when using sine law to find a side you must use this formula if you want to find an angle you just flip the fractions over.

Ex:

to find the angle you use the formula of

then plug in the numbers

which finally gives you $latex \angleB=41

COSINE LAW: When using Cosine law if you want to find the side you want to use the formula if you want to find the You must use the formula

Ex:

To find f you use the given formula

then plug in the numbers

finally you get the answer of a=31.6