Page 3 Memorization Quiz Flashcards
(22 cards)
1
Q
Formula for a coordinate point on a circle with radius r:
A
(rcosX, rsinX)
2
Q
sinx =
A
y
3
Q
cosx =
A
X
4
Q
Tanx =
A
y/x
5
Q
secx =
A
1/x
6
Q
cscx =
A
1/y
7
Q
cotx =
A
x/y
8
Q
Period sinx =
A
2pi/b
9
Q
Period cosx =
A
2pi/b
10
Q
Period tanx =
A
pi/b
11
Q
Period secx =
A
2pi/b
12
Q
Period cscx =
A
2pi/b
13
Q
Period cotx =
A
pi/b
14
Q
Reciprocal of sinx
A
cscx
15
Q
Reciprocal of cosx
A
secx
16
Q
Reciprocal of tanx
A
cotx
17
Q
Reciprocal of secx
A
cosx
18
Q
Reciprocal of cscx
A
sinx
19
Q
Reciprocal of cotx
A
tanx
20
Q
State the 3 Pythagorean identities
A
sin^2x + cos^2x = 1
1 + tan^2x = sec^2x
1 + cot^2x = csc^2x
21
Q
Write both sum and difference identities
A
Sin(A+-B) = SinACosB+-CosASinA
Cos(A+-B) = cosAcosB +- sinAsinB
For sin signs are same
For cos signs flip
22
Q
4 double angle identities
A
Sin(2x) = 2sinxcosx
Cos(2x) = cos^2x - sin^2x
Cos(2x) = 2cos^2x -1
Cos(2x) = 1 - 2sin^2x
