10 trig Flashcards
1
Q
What is the cosine rule and when do you use it?
what is a variation of the cosine rule and when do you use it?
A
-Angle sandwich
a^2=b^2+c^-2bcCOSA
-When missing angle
COSA=b^2+c^2-a^2/2bc
2
Q
What is the sine rule and when can it be used?
A
- Used for opposite lengths and opposite sides.
- a/sina = b/sinb = c/sinc
3
Q
How do you sketch the arcsin curve?
A
- Domain -1 and 1
- Range -pi/2 to pi/2
4
Q
How do you sketch the cot graph?
A
asymptotes at -180 and 180
reflected curves
5
Q
How do you sketch the arccos curve
A
- Domain -1 and 1
- range 0 and 1
6
Q
How do you sketch the arctan curve?
A
-Asymptotes at pi/2 and -pi/2
7
Q
What is a trick for sketching arc graphs
A
-Work out where they are 1 to 1 and then switch the domains and ranges.
