Pythagoras+trig Flashcards
1
Q
Pythagoras theorem
A
a² + b² = h²
2
Q
Trig
A
Sin x= o/h
Cos x= a/h
Tan x= o/a
SoH CaH ToA
3
Q
Sine rule
A
a b
——— = ———
SinA SinB
4
Q
Cosine (a²)
A
a² = b² + c²- 2bc cosA
5
Q
Cosine (cosA)
A
b² + c²- a²
—————
2bc
6
Q
Area of triangle
A
1/2 x ab sinC
