1
Q
sin (x + y) =
A
sinx * cosy + cosx*siny
2
Q
cos^2 + sin^2 =
A
1
3
Q
d/dx tan x =
A
sec^2x
4
Q
d/dx cos
A
-sinx
5
Q
d/dx csc = -
A
cscx * cot x
6
Q
d/dx sec =
A
secxtanx
7
Q
d/dx cot =
A
-csc^2x
8
Q
A
