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sinx =
1/cscx
cscx =
1/sinx
cosx =
1/sec
secx
1/cosx
tanx =
1/cotx
cotx =
1/tanx
sin(-x)
-sin(x)
cos(-x)
cos(x)
tan(-x)
-tan(x)
csc(-x)
-csc(x)
sec(-x)
sec(x)
cot(-x)
-cot(x)
sin²x+cos²x =
1
1+cot²x =
csc²x
tan²x + 1 =
sec²x
Difference of squares
a² - b² = (a + b)(a - b)
x²-1
= (x + 1)(x - 1)
sin(pi/2 - x)
cos(x)
tan(pi/2 -x)
cot(x)
sec(pi/2-x)
csc(x)
cos(pi/2 - x)
sin(x)
cot(pi/2 - x)
tan(x)
csc(pi/2 - x)
sec(x)
Note 
Flashcard (29)