precalc
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Last updated 11:04 PM on 3/29/26
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17 Terms
1
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sin period
2pi
2
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cos period
2pi
3
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tan period
pi
4
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csc period
2pi
5
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sec period
2pi
6
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cot period
pi
7
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sec VA
1/2(pi/b) + k(pi/b)
8
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csc VA
0 + k(pi/b)
9
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tan VA
1/2(pi/b) + k(pi/b)
10
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cot VA
0 + k(pi/b)
11
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pythag theorem identity 1
sin²x+cos²x = 1
12
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pythag theorem 2
1 + tan²x = sec²x
13
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pythag theorem 3
1 + cot²x = csc²x
14
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sin sum/diff identity
sin(a +- b)= (sina)(cosb) +- cosa(sinb)
plus = plus
minus = minus
15
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cos sum/diff identity
cos(a +- b)= cosa(cosb) -+ sina(sinb)
plus= minus
minus=plus
16
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sin double angle identity
sin(2x)= 2sinxcosx
17
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cos double angle identity
cos(2x)=
cos²x-sin²x
1-2sin²x
2cos²x-1
