# Math Trig Formulas: Sum and Difference Formulas and Even Odd Identities Game Information Page

Highscores    (69 registered players)
MemberScoreTimeDate
1 dohyung 100% 0:08.4 min. 18 Dec, '12
2 Koko2334 100% 0:08.5 min. 1 Mar, '12
3 ex932 100% 0:09.5 min. 5 May, '11
4 prahar1@yahoo.com 100% 0:09.6 min. 18 Nov, '11
5 crystaldianecobb 100% 0:09.7 min. 18 Nov, '11
6 jamers72 100% 0:10.0 min. 1 Mar, '12
7 kylemfclark 100% 0:10.2 min. 1 Mar, '12
8 Meri-Hanah 100% 0:10.3 min. 17 Nov, '11

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## Math Trig Formulas: Sum and Difference Formulas and Even Odd Identities

created by frenchhorn, 3 years ago in Miscellaneous

This is for people studying Trigonometry. In this game you can memorize the sum and difference formulas for trig. Memorizing these will make your life easier. 3 part series.

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frenchhorn

I too do not understand why I originally used the variables u and v, however you may be pleased to discover that I replaced the variables u and v with the proper variables x and y.

3 years ago

Euhan

Good idea for a game. This is exactly the kind of elementary thing that you shouldn't have to look up but rather know by heart.

I don't understand why you have introduced the implicit identities u=x and v=y, however. If the right hand side uses x and y there is no reason why the left hand side shouldn't.

3 years ago