Trigo Flashcards
1
Q
Sin(x)
A
1/csc(x)
2
Q
Cos(x)
A
1/sec(x)
3
Q
tan(x)
A
1/cot or sin(x)/cos(x)
4
Q
csc(x)
A
1/sin(x)
5
Q
sec(x)
A
1/cos(x)
6
Q
cot(x)
A
1/tan(x) or cos(x)/sin(x)
7
Q
Sin^2(x)+cos^2(x)
A
1
8
Q
sec^2(x)
A
1+tan^2(x)
9
Q
csc^2(x)
A
1+cot^2(x)
10
Q
Sin(2x)
A
2sin(x)cos(x)
11
Q
Cos(2x)
A
cos^2(x)-sin^2(x)
or
2cos^2(x)-1
or
1-2sin^2(x)
12
Q
tan(2x)
A
2tan(x)/1-tan^2(x)
13
Q
0 (position in the circle)
A
(1,0)
14
Q
π/6
A
(√3/2, 1/2)
15
Q
π/4
A
(√2/2, √2/2)
