Trigonometry (2) Flashcards
1
Q
Find area of any triangle?
A
Area = (1/2) ab sinC
2
Q
Area = (1/2) ab sinC
A
Find area of any triangle?
3
Q
When to use sine rule?
A
If I know two angles and a side
4
Q
If I know two angles and a side
A
When to use sine rule?
5
Q
When to use cosine rule?
A
If I know three sides
Two sides with an angle between them
6
Q
If I know three sides
Two sides with an angle between them
A
When to use cosine rule?
7
Q
What is tan x?
A
(sin x/cos x)
8
Q
(sin x/cos x)
A
What is tan x?
9
Q
What is sin^2 x?
A
1 - cos^2 x
10
Q
1 - cos^2 x
A
What is sin^2 x?
11
Q
What is cos^2 x?
A
1 - sin^2 x
12
Q
1 - sin^2 x
A
What is cos^2 x?
13
Q
What is sin^2 x + cos^2 x?
A
1
14
Q
1
A
What is sin^2 x + cos^2 x?
15
Q
What is y = n sin x?
A
A vertical stretch/squash
