M law of sine/cosine Flashcards
1
Q
law of cosine
A
a^ = b^+c^ - 2bc * cosA
2
Q
case 1
A
a<b
3
Q
case 1
a=bsinA
A
1 solution
4
Q
case 1
a>bsinA
A
2 solutions
5
Q
case 1
a
A
no solutions
6
Q
case 2
A
a >_ b
1 solution
7
Q
case 3
A
angle A is obtuse
8
Q
case 3
a
A
zero solution
9
Q
Finding area of triangle
A
.5absinC
9
Q
Finding area of triangle
A
.5absinC
10
Q
Heron’s formula s
A
.5(a+b+c)
11
Q
Herron formula finding area
A
[s(s-a)(s-b)(s-c)
