Trig Identities Flashcards
1
Q
Sin(2x) = ?
A
2sin(x)cos(x)
2
Q
cos(2x)= ?
A
cos^2(x)-sin^2(x)
3
Q
sec -> sec-> tan
csc -> csc -> cot
what is d/dx of tan?
A
sec^2(x)
4
Q
sec -> sec-> tan
csc -> csc -> cot
what is d/dx of cot?
A
-csc^2(x)
5
Q
sec -> sec-> tan
csc -> csc -> cot
what is d/dx of sec?
A
sec(x)tan(x)
6
Q
sec -> sec-> tan
csc -> csc -> cot
what is d/dx of csc?
A
-csc(x)cot(x)
7
Q
what is d/dx sin?
A
cos(x)
8
Q
what is d/dx cos?
A
-sin(x)
9
Q
tan(2x)= ?
A
sin(2x)/cos(2x)
10
Q
csc(2x)= ?
A
1/sin(2x)
11
Q
sec(2x)= ?
A
1/cos(2x)
12
Q
cot(2x)=?
A
cos(2x)/sin(2x)
13
Q
d/dx arcsin(x)
A
1/sqrt(1-x^2)
14
Q
d/dx arccos(x) = ?
A
-1/sqrt(1-x^2)
15
Q
d/dx arctan(x) = ?
A
1/(1+x^2)
16
Q
d/dx arccsc =?
A
-1/|x|* sqrt(x^2 - 1)
17
Q
d/dx arcsec =?
A
1/|x| sqrt(x^2 -1)
18
Q
d/dx arccot = ?
A
-1/1+x^2
