Trigonometry functions

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41 Terms

1
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circle

x^2+y^2=r^2

2
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sin(theta)

y/r

3
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cos(theta)

x/r

4
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tan(theta)

y/x

5
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tan(theta) second one

sin(theta)/cos(theta)

6
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cos^2(theta)+sin^2(theta)

1

7
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1+tan^2(theta)

sec^2(theta)

8
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1+cot^2(theta)

csc^2(theta)

9
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csc(theta)

1/sin(theta)

10
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sec(theta)

1/cos(theta)

11
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cot(theta)

1/tan(theta)

12
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sin(theta)

1/csc(theta)

13
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cos(theta)

1/sec(theta)

14
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tan(theta)

1/cot(theta)

15
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csc^-1(x)

sin^-1(1/x)

16
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sec^-1(x)

cos^-1(1/x)

17
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cot^-1(x)

tan^-1(1/x)

18
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sin(-(theta))

-sin(theta)

19
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csc(-(theta))

-csc(theta)

20
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tan(-(theta))

-tan(theta)

21
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cot(-(theta))

-cot(theta)

22
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cos(-(theta))

cos(theta)

23
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sec(-(theta))

sec(theta)

24
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sin(A+B)

sinAcosB+cosAsinB

25
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cos(A+B)

cosAcosB-sinAsinB

26
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sin(A-B)

sinAcosB-cosAsinB

27
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cos(A-B)

cosAcosB+sinAsinB

28
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tan(A+B)

(tanA+tanB)/(1-tanAtanB)

29
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tan(A-B)

(tanA-tanB)/(1+tanAtanB)

30
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sin2(theta)

2sin(theta)cos(theta)

31
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sin((theta)/2)

(+-) sqrt ((1-cos(theta))/2)

32
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cos2(theta) 1

cos^2(theta)-sin^2(theta)

33
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cos2(theta) 2

2cos^2(theta)-1

34
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cos2(theta) 3

1-2sin^2(theta)

35
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cos((theta)/2)

(+-) sqrt((1+cos(theta))/2))

36
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tan2(theta)

2tan(theta)/1-tan^2(theta)

37
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tan((theta)/2)

1-cos(theta)/sin(theta)

38
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sin^2(theta)

(1-cos2theta)/2

39
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sin^2(theta) 2

sin(theta)/1+cos(theta)

40
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cos^2(theta)

(1+cos2theta)/2

41
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cos^2(theta) 2

(+-)sqrt(1-cos(theta))/(1+cos(theta))