Geometry Flashcards
1
Q
law of sines
A
(sinA/a) = (sinB/b) = (sinC/c)
2
Q
law of cosines
A
a2 = b2 + c2 - 2bc·cosA
b2 = c2 + a2 - 2ca·cosB
c2 = a2 + b2 - 2ab·cosC
3
Q
slope
A
(y2-y1) over (x2-x1)
rise over run
4
Q
Pythagorean theorem
A
a2+b2=c2
5
Q
Distance formula
A
d=√((x2 – x1)² + (y2 – y1)²)
6
Q
Quadratic formula
A
x= (-b+√b2-4ac)
- /2a
7
Q
A
