Ecellent notes & formulas in trignometry must see it

Blazing goIITian

Posted on
6 Oct 2007 19:59:44 IST

Posts: 1069

6 Oct 2007 19:59:44 IST

Like 0 people liked this

4966

Ecellent notes & formulas in trignometry must see it

Engineering Entrance , JEE Main , JEE Advanced , Mathematics , Trigonometry

Trigonometric Identities:

Trigonometry Identities, Mathematics Formulae, Eformulae.com

Pythagorean Identities:

Sum / Difference Formulas

Sum Difference Formulae, Mathematics Formulae, Eformulae.com

Rules of Sign

Quadrant	sin	cos	tan
	cosec	sec	cot

I	+	+	+
II	+	-	-
III	-	-	+
IV	-	+	-

Reduction Formulae

Angle/Function	sin	cos	tan
-?	-sin ?	cos ?	-tan ?
90°- ?	cos ?	sin ?	cot ?
90°+ ?	cos ?	-sin ?	-cot ?
180°- ?	sin ?	-cos ?	-tan ?
180°+ ?	-sin ?	-cos ?	tan ?
270°+ ?	-cos ?	-sin ?	cot ?
270°+ ?	-cos ?	sin ?	-cot ?
360°+ ?	-sin ?	cos ?	-tan ?

Half Angle

Double Angle

Co-function Identities

Negative Angle Identities

Power Reducing

Sum To Product

Product To Sum

Other Trigonometry Identities

Friends hope u found this article useful please do comment & rate on this article if found useful

Comments (11)

Rakesh OFFLINE

Blazing goIITian

Joined: 31 Jan 2007 06:17:58 IST

Posts: 1069

6 Oct 2007 22:11:23 IST

Like 0 people liked this

why only rates no comments , please do post ur precious comments too

Eshaan Shinde

New kid on the Block

Joined: 11 Mar 2007 22:57:09 IST

Posts: 14

6 Oct 2007 22:20:20 IST

Like 0 people liked this

No Great job.All The Above Formulas are available in any standard textbook for 12th.You needed those nickels very badly!

ramyani chakrabarty

Blazing goIITian

Joined: 22 Apr 2007 11:21:45 IST

Posts: 2537

6 Oct 2007 23:31:03 IST

Like 0 people liked this

nice.

Ayush Kumar

Hot goIITian

Joined: 25 Jan 2007 18:48:30 IST

Posts: 154

9 Oct 2007 17:08:21 IST

Like 0 people liked this

well..i would say...a good pack of formulaes...
few part of the post is well...appreciative...like the way you have represented the sin, cos and tan...in begnning for better rememberance..
it would be much better if you provide the process of arriving to the results and few reasonings......
it would be helpful if its self written and proved than to copy-paste...
like ....
how would you represent..
tan (a+b) formula...in (hieght/base) form?? think...
well ...make the posts more innovative..its really useful..

Ayush Kumar

Hot goIITian

Joined: 25 Jan 2007 18:48:30 IST

Posts: 154

9 Oct 2007 17:08:51 IST

Like 0 people liked this

oh...one more thing...
KEEP SMILING...........

Swati

Blazing goIITian

Joined: 3 Aug 2007 22:20:01 IST

Posts: 415

9 Oct 2007 22:17:02 IST

Like 0 people liked this

good article

bumba

Scorching goIITian

Joined: 25 Feb 2007 12:06:41 IST

Posts: 225

10 Oct 2007 09:04:45 IST

Like 0 people liked this

nice article..

gauravgk

Cool goIITian

Joined: 9 Dec 2006 13:44:14 IST

Posts: 68

11 Oct 2007 14:41:09 IST

Like 0 people liked this

useful article....but had seen many articles like this!!! neways....keep posting !!.............

its mee

Blazing goIITian

Joined: 16 Mar 2007 11:52:47 IST

Posts: 544

4 Nov 2007 10:30:38 IST

Like 0 people liked this

good article...i found it pretty usefull...!!!!!
keep posting such stuff........!!!!!

prasadbsd roy

New kid on the Block

Joined: 22 Jul 2007 16:12:09 IST

Posts: 3

4 Nov 2007 14:05:20 IST

Like 0 people liked this

ya its awesome keep it up.

Kavindra Mishra

Hot goIITian

Joined: 27 Oct 2007 22:58:49 IST

Posts: 110

29 Jan 2008 01:24:15 IST

Like 0 people liked this

i thnk remembering that sin cos thing is easier by "Pandit Badri Prasad, Har Har Bole" rule.

Quick Reply

Reply

	Some HTML allowed.
	Keep your comments above the belt or risk having them deleted.
	Signup for a avatar to have your pictures show up by your comment
	If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team