Basic Unit Circle

What is the value of sine at 30

Type in ONE of the quadrantal angles (you have several to choose from):

(a)  

What is the radius of the Unit Circle?

(type only the number.)

(a)  

135° is found in which quadrant?

Which of the following points is in the unit circle?

Drag and drop the (x,y)-coordinates of the unit circle into the correct space.

A central angle of the unit circle has measure θ such that  $$\sin\theta=-\cos\left(\frac{2\pi}{3}\right)$$ .

On the unit circle below, select TWO possible points where the terminal side of the angle may intersect the circle.

What is the radius of a unit circle?

What point on the unit circle corresponds to $$\frac{3\pi}{2}$$  ?

What is the tangent of $$\frac{5\pi}{4}$$ radians?