Triangles Flashcards
1
Q
Right angled and involves 3 sides?
A
Pythagoras” theorem
2
Q
Right angled and involved 2 sides and 1 angle?
A
Soh, cah, toa
3
Q
Not right anglles and involves 2 sides and 2 angles?
A
Sine rule
4
Q
Not right angled and involved 3 sides and 1 angles?
A
Cosine rule
5
Q
The sine rule is
A
a/sinA = b/sinB = c/sinC
6
Q
What is the sine rule used for? ( a/sinA =b/sinB = c/sin)
A
To calculate lengths
7
Q
The cosine rule is
A
a^2 =b^2 + c^2 — 2bc cos A
8
Q
What is the sine rules used for? (SinA/a = sinB/b = sinC/c)
A
To calculate angles
9
Q
What is the cosine rule used for? ( cos A = ^2 + c^2 — a^2/2bc)
A
To calculate angles
10
Q
A
