UNIT CIRCLE #2

Front

In which quadrants is sinθ positive?

Back

sinθ is positive in the 1st and 2nd quadrants.

Front

What is the value of cosine at 135°?

Back

The value of cosine at 135° is -√2 /2.

Front

What is the exact value of cos 330°?

Back

The exact value of cos 330° is √3/2.

Front

What is the value of cos 5π/6?

Back

The value of cos 5π/6 is -√3/2.

Front

What is half a circle in radians?

Back

Half a circle in radians is π.

Front

What is the range of sine function?

Back

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

Front

What is the value of sin 90°?

Back

The value of sin 90° is 1.

Front

What is the value of cos 0°?

Back

The value of cos 0° is 1.

Front

What is the relationship between sine and cosine in the unit circle?

Back

In the unit circle, sinθ is the y-coordinate and cosθ is the x-coordinate of the point on the circle.

Front

What is the value of tan 45°?

Back

The value of tan 45° is 1.