Unit Circle and Trig Functions

Flashcards for common angles and trigonometric functions in radians.

0 degrees in radians

0 rad

30 degrees in radians

π/6 rad

45 degrees in radians

π/4 rad

60 degrees in radians

π/3 rad

90 degrees in radians

π/2 rad

120 degrees in radians

2π/3 rad

135 degrees in radians

3π/4 rad

150 degrees in radians

5π/6 rad

180 degrees in radians

π rad

210 degrees in radians

7π/6 rad

225 degrees in radians

5π/4 rad

240 degrees in radians

4π/3 rad

270 degrees in radians

3π/2 rad

300 degrees in radians

5π/3 rad

315 degrees in radians

7π/4 rad

330 degrees in radians

11π/6 rad

360 degrees in radians

2π rad

tan(θ)

sin(θ)/cos(θ)

csc(θ)

1/sin(θ)

sec(θ)

1/cos(θ)

cot(θ)

1/tan(θ)

The sine of π/6 radians is

1/2

The cosine of π/6 radians is

√3/2

The tangent of π/6 radians is

√3/3

The cosecant of π/6 radians is

2

The secant of π/6 radians is

2√3/3

The cotangent of π/6 radians is

√3

The sine of π/4 radians is

√2/2

The cosine of π/4 radians is

√2/2

The tangent of π/4 radians is

1

The cosecant of π/4 radians is

√2

The secant of π/4 radians is

√2

The cotangent of π/4 radians is

1

The sine of π/3 radians is

√3/2

The cosine of π/3 radians is

1/2

The tangent of π/3 radians is

√3

The cosecant of π/3 radians is

2√3/3

The secant of π/3 radians is

2

The cotangent of π/3 radians is

√3/3