Trigonometry Formulas

Published by Rahul Aggrawal on

trigonometry formulas

Trigonometry formula Booklet PDF download

Click the below button to Download the Trigonometry formula booklet PDF.

Below formula list is a summery of only the basic formulas. The formula booklet PDF contains all the necessary formulas, diagrams and graphs.

1.Sin2x+Cos2x=1
2.1+tan2x=Sec2x
3.1+cot2x=Cosec2x
4.Sinx= 1cosecx

or cosecx =

1sinx
5.Cosx= 1secx

or secx =

1cosx
6.Tanx= 1cotx

or cotx=

1tanx
7.Sin2x=2sinxcox
8.Cos2x=Cos2x-sin2x = 2cos2x-1 = 1-2sin2x
9.Tan2x= 2tanx1tan2x
10.Sin3x=3sinx-4sin3x
11.Cos3x=4cos2x-3cosx
12.Tan 3x=
13.Sin(x+y)=Sinx cosy+ cosx siny
14.Sin (x-y)=Sinx cosy- cosx siny
15.Cos(x+y)=cosx cosy- sinx siny
16.Cos(x-y)=cosx cosy+ sinx siny
17.Tan(x+y)= tanx+tany1tanxtany
18.Tan (x-y)= tanxtany1+tanxtany
19.Cot (x+y)=
20.Cot (x-y)=
21.Sinx+ siny=2sin
22.Sinx –siny=2cos
23.Cosx+cosy=2cos
24.Cosx-cosy=-2sin
25.2 sinx cosy=Sin (x+y) +sin (x-y)
26.2 cosx siny=Sin (x+y) –sin (x-y)
27.2 cos x cosy=Cos (x+y) + cos (x-y)
28.2 sinx siny=Cos (x-y) –cos (x+y)

 


Rahul Aggrawal

I am a teacher and a theoretical physicist. Physics gives me pleasure and teaching physics gives me stable happiness. For More info visit www.rahulaggrawalphysics.blogspot.com

1 Comment

Prashant Kumar Sinha · May 31, 2018 at 5:48 pm

kindly fill the formula list properly..

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