The General Triangle

1
The General Triangle
C
B
A
2
The General Triangle
a
C
B
A
3
The General Triangle
a
C
B
b
A
4
The General Triangle
a
C
B
c
b
A
5
The Sine Rule
B
a
c
C
A
b
6

• Example
• Find c in the triangle below

7

• Example
• Find a in the triangle below

8

• Example
• Find x in the triangle below

9

• Example
• Find the size of angle B in the triangle below

10

• Example
• Find the size of angle A in the triangle below

B
70?
24cm
C
11cm
A
11

• Example
• Find the size of angle R in the triangle below

P
18.5cm
10.5cm
R
85?
Q
12

• Example
• In triangle ABC, AC 3cm, angle B 40? and
  angle A 65?. Find the length BC.
• Example
• In triangle ABC, AB 6m, angle B 25? and
  angle C 110?. Find AC.