Trig Identities Memory Quizzes

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20 Terms

1
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Reciprocal: sin(x)

1/csc(x)

2
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Reciprocal: cos(x)

1/sec(x)

3
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Reciprocal: tan(x)

1/cot(x)

4
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Reciprocal: csc(x)

1/sin(x)

5
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Reciprocal: sec(x)

1/cos(x)

6
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Reciprocal: cot(x)

1/tan(x)

7
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Quotient: tan(x)

sin(x)/cos(x)

8
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Quotient: cot(x)

cos(x)/sin(x)

9
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Pythagorean: sin²(x) + cos²(x)

1

10
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Pythagorean: tan²(x) + 1

sec²(x)

11
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Pythagorean: cot²(x) + 1

csc²(x)

12
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Cofunction: cos((π/2)-x)

sin(x)

13
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Cofunction: tan((π/2)-x)

cot(x)

14
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Cofunction: sec((π/2)-x)

csc(x)

15
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Cofunction: sin((π/2)-x)

cos(x)

16
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Cofunction: cot((π/2)-x)

tan(x)

17
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Cofunction: csc((π/2)-x)

sec(x)

18
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Even/Odd: sine function

odd, symmetric with origin

sin(-x)=-sin(x)

19
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Even/Odd: cosine function

even, symmetric with y-axis

cos(-x)=cos(x)

20
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Even/Odd: tangent function

odd, symmetric with the origin

tan(-x)= -tan(x)