Chapter 11 Flashcards
(5 cards)
1
Q
What is the sine rule?
A
a/sinA = b/sinB = c/sinC.
2
Q
What is the ambiguous case?
A
When using the sine rule for an angle, there may be 2 possible solutions (180 - x).
3
Q
What is the cosine rule?
A
c^2 = a^2 + b^2 - 2ab cosC.
4
Q
What is the rearranged version of the cosine rule?
A
cosC = (a^2 + b^2 - c^2)/2ab.
5
Q
What is the formula for the area of a triangle?
A
Area = 1/2 ab sin C.
