Memorize the Unit Circle

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Cos 3π/4

- 2 √ 2

Cos 5π/4

- 2 √ 2

Sin 5π/4

- 2 √ 2

Sin 7π/4

- 2 √ 2

Cos π

-1

Sin 3π/2

-1

Cos 2π/3

-1/2

Cos 4π/3

-1/2

Sin 11π/6

-1/2

Sin 7π/6

-1/2

Cos 5π/6

-3√2

Cos 7π/6

-3√2

Sin 4π/3

-3√2

Sin 5π/3

-3√2

0 degrees in radians is

0

Cos 3π/2

0

Cos π/2

0

Sin 0

0

Sin π

0

Cos 0

1

Sin π/2

1

Cos 5π/3

1/2

Sin 5π/6

1/2

Sin π/6

1/2

What is the cos π/3

1/2

What is the sin 5π/6

1/2

330 degrees in radians is

11π/6

120 degrees in radians is

2π/3

270 degrees in radians is

3π/2

135 degrees in radians is

3π/4

240 degrees in radians is

4π/3

300 degrees in radians is

5π/3

225 degrees in radians is

5π/4

150 degrees in radians is

5π/6

315 degrees in radians is

7π/4

210 degrees in radians is

7π/6

180 degrees in radians is

π

90 degrees in radians is

π/2

60 degrees in radians is?

π/3

45 degrees in radians is

π/4

30 degrees in radians is?

π/6

Cos 7π/4

√2/2

Cos π/4

√2/2

Sin 3π/4

√2/2

What is the sin π/4

√2/2

Cos 11π/6

√3/2

Cos π/6

√3/2

Sin 2π/3

√3/2

Sin π/3

√3/2

What is the sin π/3

√3/2


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