13CALC Unit Circle

Degrees to Radians

100

300

5π/3

200

45

π/4

300

270

3π/2

400

315

7π/4

500

450

5π/2

Radians to Degrees

100

π/6

30

200

2π/3

120

300

3π

540

400

5π/6

150

500

3.5π

630

Sine and Cosine

100

sin (30)

1/2

200

cos(π/2)

0

300

sin(5π/4)

-√2/2

400

cos(3π)

-1

500

For what angles (in radians) between 0 and 2π  does the cosine equal 1/2?  

π/3 and 5π/3

30-60-90

100

Find the hypotenuse of this triangle, if the side opposite the 30 degree angle is 10.

20

200

Find the side opposite the 60 degree angle, if the hypotenuse is 12.

6√3

300

Find the side opposite the 30 degree angle, if the side opposite the 60 degree angle is 6.

2√3

400

Find the ratio of the side lengths of the 30:60:90 triangle.

1:√3:2

500

How did you label your Unit Circle and what does this abbreviation stand for.

TBF - temporary best friend

45-45-90

100

Find the hypotenuse, if the length of a leg is 5.

5√2

200

Find the length of a leg, if the hypotenuse is 8.

4√2

300

Find the length of a leg, if the hypotenuse has length 3.

(3√2)/2

400

Find the ratio of the side lengths of the 45:45:90 triangle.

1:1:√2

500

Where on your formula sheet is the Unit Circle?

Nowhere - you have to study it and use it and remember it.  Awesome!