Sin Flashcards
1
Q
Difference sin
A
Sin(a) cos(b) - sin(b) cos(a)
2
Q
Two sin
A
2sin(a) cos(a)
3
Q
Half sin
A
+/- (square root all this)
(1-cos(a))/2
4
Q
Sum cos
A
Cos(a) cos(b) - sin(a) sin(b)
5
Q
Difference cos
A
Cos(a) cos(b) + sin(a) sin(b)
6
Q
Twice cos (original)
A
Cos^2(a) - sin^2(a)
7
Q
Twice cos (cosine only)
A
2cos^2(a) -1
8
Q
Twice cos (sine only)
A
1 - 2sin^2(a)
9
Q
Half cos
A
+/- (square root all this)
(1 + cos(a))/2
10
Q
Sum tan
A
Tan(a) + tan(b) / 1 - tan(a) tan(b)
11
Q
Difference tan
A
Tan(a) - tan(b) / 1 + tan(a) tan(b)
12
Q
Twice tan
A
2tan(a) / 1 - tan^2(a)
13
Q
Half tan
A
+/- (square root all this)
1 - cos(a) / 1 + cos(a)
14
Q
Sum of sin
A
Sin(a) cos(b) + sin(b) cos(a)
