Converting degrees and DMS
Unit Circle
Find the periodicity
Inverse Functions
100

Convert into degrees (two decimals) 

40* 10’ 0”

40.17*
100

Using the Unit Circle find Sin(11π/6)

-1/2

100

Sin(5Π/2)

Π/6 or 30*

100

Arcsin(sin1/2)

1/2

200

Convert into dms

10.6*

10* 36’

200

Using the unit circle find Cos(150)

- √ 3/2

200

Cos(7Π/4)

- √2/2 or 135

200

Cos(arcsin3Π/4)

Π/4 or 45*

300

Convert into degrees (two decimals) 

25* 5’ 36”

25.09*

300

Using the unit circle find Cos & Sin of 7Π/6

Cos: -√ 3/2 

Sin:-1/2

300

Sin(-9Π/2)

7Π/6 or 210*

300

Arccsin(cos(5Π/3))

Π/6 or 30*

400

Convert into degrees (two decimals)

100* 45’ 55”

100.77*

400

Using the unit circle find Tan(300) 

Tan= - √3

400

Tan(-13Π/3)

 √3

400

Tan(arcsin-1/2)

 √3/3

500

Convert into DMS 

49.784

49* 47’ 2.4” 

500

Using the unit circle find tan(11Π/6)

- √3/3 

500

Tan (23Π/6)

- √3/3

500

Tan(arccos(- √3/2))

- √3/3

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