sin cos Flashcards
= 1
1
Q
sin(2a)+cos(2a)
A
1
2
Q
tana
A
sina/cosa
3
Q
1+tan 2 (a)
A
= 1/cos2(a)
4
Q
1+cot 2(a)
A
=1/sin2(a)
5
Q
sin(a+b)
A
=sin(a)cos(b)+cos(a)sin(b)
6
Q
sin(a−b)
A
=sin(a)cos(b)−cos(a)sin(b)
7
Q
cos(a+b)
A
=cos(a)cos(b)−sin(a)sin(b)
8
Q
cos(a−b)
A
=cos(a)cos(b)+sin(a)sin(b)
9
Q
cos(−x)
A
=cos(x)
10
Q
sin(−x)
A
=−sin(x)
11
Q
tan(−x)
A
=−tan(x)
12
Q
cot(−x)
A
=−cot(x)
13
Q
A
