Common Trigonometric Values at Special Angles

Vocabulary flashcards covering the values of all six trigonometric functions—sine, cosine, tangent, cosecant, secant, and cotangent—at the standard angles 0, π/6, π/4, π/3, π/2, π, 3π/2, and 2π.

sin(0)

0

cos(0)

1

tan(0)

0

csc(0)

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sec(0)

1

cot(0)

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sin(π/6)

1/2

cos(π/6)

√3/2

tan(π/6)

√3/3

csc(π/6)

2

sec(π/6)

2/√3

cot(π/6)

√3

sin(π/4)

√2/2

cos(π/4)

√2/2

tan(π/4)

1

csc(π/4)

√2

sec(π/4)

√2

cot(π/4)

1

sin(π/3)

√3/2

cos(π/3)

1/2

tan(π/3)

√3

csc(π/3)

2/√3

sec(π/3)

2

cot(π/3)

√3/3

sin(π/2)

1

cos(π/2)

0

tan(π/2)

undefined

csc(π/2)

1

sec(π/2)

undefined

cot(π/2)

0

sin(π)

0

cos(π)

-1

tan(π)

0

csc(π)

undefined

sec(π)

-1

cot(π)

undefined

sin(3π/2)

-1

cos(3π/2)

0

tan(3π/2)

undefined

csc(3π/2)

-1

sec(3π/2)

undefined

cot(3π/2)

0

sin(2π)

0

cos(2π)

1

tan(2π)

0

csc(2π)

undefined

sec(2π)

1

cot(2π)

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