#2

Lets take a few steps back to chapter 9! yayyyy.........NOT.

first thing we did was solving right triangles.
SOHCAHTOA
I still suck at these so I won't do any examples :)
sin=opposite/hypotenuse
cos=adjacent/hypotenuse
tan=opposite/adjacent
csc=hypotenuse/opposite
sec=hypotenuse/adjacent
cot=adjacent/opposite

FINDING AREA!
**when you have a right triangle it's super easy!
FORMULA:
1/2(b)(h)

non-right triangles are easy too!
FORMULA:
1/2(a)(b)sin(angle b/w)

LAW OF SINES
-only non-right triangles
-must have an angle and opposite leg value

FORMULA:
sin(angle)/opposite leg=sin(angle2)/opposite leg2

*cross multiply to solve!

LAW OF COSINES
*this one sucks!
-use this when you can't possibly do anything else.

FORMULA:
(opp leg)^2=(adj leg)^2+(adj leg)^2-2(adj leg)(adj leg)cos(angle b/w)