Be sure you know, or know how to quickly determine,
the following information.

If you know the special right triangles and/or the trigonometric graphs, you already know how to determine this information.

(degrees)

0º

30º

45º

60º

90º

180º

270º

(radians)

0

0

(0.5)

(0.707)

(0.866)

1

0

-1

1

(0.866)

(0.707)

(0.5)

0

-1

0

0

(0.577)

1

(1.732)

undefined

0

undefined

If you can fill in the chart above, you can also complete the chart below by simply using the relationships between the basic trig functions and their reciprocal functions.
Just flip over the corresponding results.

(degrees)

0º

30º

45º

60º

90º

180º

270º

(radians)

0

undefined

2

(1.414)

(1.547)

1

undefined

-1

1

(1.547)

(1.414)

2

undefined

-1

undefined

undefined

(1.732)

1

(0.577)

0

undefined

0

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