Trigonometric Ratios Flashcards
1
Q
What is the sine rule for side lengths?
A
a/sinA = b/sinB
2
Q
What is the sine rule for angles?
A
sinA/a = sinB/b
3
Q
What is the cosine rule for side lengths?
A
a^2 = b^2 + c^2 -2bc cosA
4
Q
What is the cosine rule for angles?
A
cosA = (b^2 + c^2 - a^2) / (2bc)
5
Q
What is the area of a triangle?
A
1/2 ab SinC
