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Trigonometry basics
Trigonometry basics
35
Mathematics
Undergraduate 2
10/07/2011
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Term
30°
 Definition
π/6
Term
45°
 Definition
π/4
Term
60°
 Definition
π/3
Term
90°
 Definition
π/2
Term
120°
 Definition
2π/3
Term
135°
 Definition
3π/4
Term
150°
 Definition
5π/6
Term
180°
 Definition
π
Term
210°
 Definition
7π/6
Term
225°
 Definition
5π/4
Term
240°
 Definition
4π/3
Term
270°
 Definition
3π/2
Term
300°
 Definition
5π/3
Term
315°
 Definition
7π/4
Term
330°
 Definition
11π/6
Term
360°
 Definition
2π
Term
sin
 Definition
opp/hyp:: b/c
Term
cos
 Definition
adj/hyp:: a/c
Term
tan
 Definition
opp/adj:: b/a sib/cos
Term
cot
 Definition
1/tan:: a/b:: adj/opp
Term
sec
 Definition
1/cos:: c/a:: hyp/adj
Term
csc
 Definition
1/sin:: c/b:: hyp/opp
Term
sin^2+cos^2=1
 Definition
Term
1+tan^2=sec^2
 Definition
Term
1+cot2=csc^2
 Definition
Term
length of an arc
 Definition
s=rΘ :: Θin radians
Term
area of a sector
 Definition
A= 1/2 r^2Θ
Term
even functions
 Definition
cos sec
Term
odd functions
 Definition
sin tan cot csc
Term
D&R sin
 Definition
(-∞,∞) : [-1,1]
Term
D&R cos
 Definition
(-∞,∞): [-1,1]
Term
D&R of tan
 Definition
t≠(2k+1)Π/2 ::(-∞,∞)
Term
D&R of cot
 Definition
t≠kΠ :: (-∞,∞)
Term
D&R of sec
 Definition
t≠(2k+1)Π/2 ::(-∞,-1]U[1,∞)
Term
D&R of csc
 Definition
t≠kΠ :: (-∞,-1]U[1,∞)
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