Identidades trigonométricas Flashcards
1
Q
sin^2(x)
A
1 - cos^2(x)
2
Q
sin^2(x)
A
1/2(1 - cos(2x))
3
Q
sin(2x)
A
2sin(X)cos(X)
4
Q
cos(2X)
A
2cos^2(x) - 1
5
Q
tan^2(X)
A
sec^2(X) - 1
6
Q
sin(X)cos(B)
A
1/2( sin(X - b) + sin (X + b ))
7
Q
sin(X)sin(B)
A
1/2(cos(X - b) - cos(X + b)
8
Q
cos(X)cos(B)
A
1/2(cos(X - b) + cos(X + b))
9
Q
cos^2(X)
A
1 - sin^2(X)
10
Q
cos^2(X)
A
1/2(1 + cos(2X)
11
Q
cos(2X)
A
cos^2(X) - sin^2(X)
12
Q
cos(2X)
A
2cos^2(X) - 1
13
Q
sec^2
A
tan^2(X) + 1
