Trigonometry Flashcards
1
Q
Right-angled, involves 3 sides
A
Pythagoras’ theorem
a² + b² = c²
2
Q
Right angled, involves 2 sides and 1 angle
A
SOH CAH TOA
3
Q
Non-right-angled, involves 2 sides and two angles
A
Sine rule
4
Q
Non-right-angled, involves 3 sides and 1 angle
A
Cosine rule
5
Q
Pythagoras’ theorem
A
Right-angled, involves 3 sides
6
Q
SOH CAH TOA
A
Right angled, involves 2 sides and 1 angle
7
Q
Sine rule
A
Non-right-angled, involves 2 sides and two angles
8
Q
Cosine rule
A
Non-right-angled, involves 3 sides and 1 angle
9
Q
What is the Sine rule to find a side?
A
a/sinA = b/sinB
10
Q
What is the Sine rule to find an angle?
A
sinA/a = sinB/b
11
Q
What is the Cosine rule to find a side?
A
a² = b² + c² - 2bc cosA
12
Q
What is the Cosine rule to find an angle?
A
cosA = b² + c² - a²/2bc
13
Q
Area of a triangle
A
1/2 ab sinC
