Ch 13 & 14 Flashcards
1
Q
Sin UC
A
y/r
2
Q
Cos UC
A
X/r
3
Q
Tan UC
A
Y/x
4
Q
Sin reciprocal UC
A
Csc
R/y
5
Q
Cos reciprocal UC
A
Sec
R/x
6
Q
Tan reciprocal UC
A
Cot
X/y
7
Q
Quadrants signs
A
ASTC All pos Sin/ recip pos Tan/ recip pos Cos/ recip pos
8
Q
30*
A
|3/2, 1/2
Pie/6
9
Q
45*
A
|2/2, |2/2
Pie/4
10
Q
60*
A
1/2, |3/2
11
Q
90*
A
Pie/2
12
Q
Remember quadrants 1 2 3 4
A
1- all pos
2- sin pos
3- tan pos
4- cos pos
13
Q
Sin triangle
A
Opp/hyp
14
Q
Cos triangle
A
Adj/hyp
15
Q
Tan triangle
A
Opp/adj
16
Q
30,60,90 triangles
A
Across 90 is 2x
Across 60 is x|3
Across 30 is x
17
Q
45 45 90 triangle
A
45 x
45 x
90 x|2
18
Q
Coterminal angles
A
Same line
Pos neg angle
19
Q
Conversion factor for radians and degrees
A
One pie = 180*
20
Q
Area of sector
A
1/2(r^2)ø
Ø is in radians
21
Q
Arc length
A
rØ
Ø is in radians
22
Q
Reference Angles are in relationship to
A
X axis
23
Q
How to evaluate trig functions
A
Find reference angle (Ø’)
Evaluate trig function for Ø’
Determine sign based on quadrant of beginning
24
Q
Sin ^-1 3/2means
A
Sin Ø = 3/2
25
When doing inverse functions, always use what mode
Degrees
26
Sin graph starts
On the bottom of the wave
27
Cosine graph starts on the
Top of the wave
28
How to find max and mins of sin and cos
Amplitude
29
Period for cos sine
2pie/ b
30
Period for tan
Pie/b
31
Asymptotes for tan
Pie/ 2b
32
Halfway points for tan
(Pie/4b, a)
33
Midline
Horizontal line in vertical shift
34
Pythagorean identity
Sin^2 Ø + cos^2 Ø=1
35
General solution or interval are in
Radians
