2006-08-26 08:58:01 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Yup, Trigonometry Functions and Identities.
2006-08-26 09:00:55 · answer #1 · answered by Anonymous · 0⤊ 0⤋
You might need to memorize the identities. The best way is to do EVERY problem in the chapter until the identities become very familiar.
2006-08-26 09:33:13 · answer #2 · answered by Anonymous · 0⤊ 0⤋
what do you need specifically? Suggest getting a Math Formula book as your companion. This book contains all identities, angle relationships you will need for all of your Math courses. A very good reference is
Shaum's Mathematical Handbook of Formulas and Tables
Good luck.
2006-08-26 09:04:02 · answer #3 · answered by alrivera_1 4 · 0⤊ 0⤋
a million. on account that cos^2(x) + sin^2(x) = a million for all x's, utilising x=20 you get: cos A = 2 cos^2(20) - a million = a million - 2 sin^2(20). 2. only replace tan via "sin/cos" and multiply it out. 3. You *can* use all those paths to get your answer, however the simplest must be "c" and "d".
2016-12-14 12:29:12 · answer #4 · answered by edme 3 · 0⤊ 0⤋
http://www.math.com/tables/trig/identities.htm
2006-08-26 09:03:51 · answer #5 · answered by Sherman81 6 · 0⤊ 0⤋
SIN ,COS ,TAN???
WHATS UR FREAKED QUESTION?
2006-08-26 09:02:53 · answer #6 · answered by lalu s 1 · 0⤊ 0⤋