1
Q
Sin(A+B)
A
SinA.CosB +CosA.SinB
2
Q
Sin(A-B)
A
SinA.CosB-CosA.sinB
3
Q
Cos(A+B)
A
CosA.CosB-SinA.SinB
4
Q
Cos(A-B)
A
CosA.CosB+SinA.SinB
5
Q
Tan(A+B)
A
TanA+TanB/ 1-TanATanB
6
Q
Tan(A-B)
A
TanA-TanB/ 1+TanATanB
7
Q
Sin2A
A
2SinACosA
8
Q
Cos2A
A
1- 2Sin^2A
9
Q
sinC+sinD
A
2sin(C+D)/2 cos(C-D)/2
9
Q
sinC-sinD
A
2sin(C-D)/2 cos(C+D)/2
10
Q
cosC−cosD
A
-2Sin(C+D)/2 Sin(C-D)/2
11
Q
cosC+cosD
A
2Cos(C+D)/2 Cos(C-D)/2
12
Q
(d/dx) (x^n)
A
( nx^{n-1}
13
Q
d/dx (a)
A
0
14
Q
de^x/dx
A
e^x
15
Q
dsinx/dx
A
cosx
16
Q
dcosx/dx
A
-sinx
17
Q
d(tan x)/dx
A
sec^2x
18
Q
d(xy)
A
xdy+ydx
19
Q
d(x/y)
A
ydx-xdy/y^2
20
Q
m=3/4
A
θ=37 degree
JEE
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