Trigonometry Flashcards
1
Q
What is pythagoras theorem?
A
a²+b²= c²
2
Q
What is the sine rule?
A
a/SinA= b/SinB= c/SinC
3
Q
What is the cosine rule for a missing side?
A
a²=b²+c² - 2bc cos(A)
4
Q
What is the cosine rule for a missing angle?
A
cosA= b²+c²-a²/ 2bc
5
Q
What is the sine rule for area of a triangle?
A
Area=½ab sin(c)
6
Q
sine(0)
A
0
7
Q
Cos(0)
A
1
8
Q
Tan(0)
A
0
9
Q
Sin(30)
A
1/2
10
Q
Cos(30)
A
square root 3/ 2
11
Q
Tan(30)
A
1/ square root 3
12
Q
sin(45)
A
1/ square root 2
13
Q
Cos(45)
A
1/ square root 2
14
Q
Tan(45)
A
1
15
Q
Sin(60)
A
square root 3/ 2
