Ch. 6 - Trigonometry Flashcards
1
Q
SOH CAH TOA
A
2
Q
sin2x + cos2x = ?
A
1
3
Q
1 + tan2x = ?
A
sec2x
4
Q
1 + cot2x = ?
A
csc2x
5
Q
The unit cirlce
A
6
Q
All Students Take Calculus
A
7
Q
Unit Circle measurements
A
8
Q
y = sinx
y = cosx
y = tanx
A
9
Q
Law of Sines
A
Use if you know:
- two sides and one of their opposite angles (watch out of ambiguous case)
- two angles and any side
10
Q
Law of Cosines
A
Use if you know:
- all three sides
- two sides and the anlge between them
11
Q
Polar coordinates use the distance, r, between a point and the origin, and the angle Ø.
A point is polar cooridnates would be (r, Ø).
A
12
Q
There is an infinite number of equivalent polar coordinates for any point.
A
You can also create equivalent coordinates by increasing or decreasing the angle by 180° and flipping the sign on the distance.
13
Q
Converting Coordinates between polar and rectangular.
A
cosØ = x/r; sinØ = y/r; tanØ = y/x; x2 + y2 = r2
