Exact Values Trig Unit Circle

Front

Sin θ is positive in which quadrants?

Back

The 1st and 2nd quadrants.

Front

Cos θ is positive in which quadrants?

Back

The 1st and 4th quadrants.

Front

Back

Undefined.

Front

What is the range of the sine function?

Back

The range of the sine function is [-1, 1].

Front

What is the range of the cosine function?

Back

The range of the cosine function is [-1, 1].

Front

What is the value of tan 0?

Back

0.

Front

What is the value of sin 90°?

Back

1.

Front

What is the value of cos 90°?

Back

0.

Front

What is the value of tan 45°?

Back

1.

Front

In which quadrant is tan θ positive?

Back

In the 1st and 3rd quadrants.