Exact Values of Unit Circle

The hypotenuse of any right triangle from the center of the unit circle to an edge is always

• 1

• sqt2/2

• sqt3/2

• 1/2

Based on your unit circle sin(30^o)=

• sqt2/2

• 1/2

• 1

• sqt3/2

Based on your unit circle cos(30^o)=

• 1

• 1/2

• sqt3/2

• sqt2/2

Based on your unit circle cos(0^o)=

• 1

• 0

• -1

• 1/2

Based on your unit circle cos(90^o)=

• 0

• -1

• 1/2

• 1

Based on your unit circle sin(0^o)=

• 1

• -1

• 0

• 1/2

Based on your unit circle sin(90^o)=

• 1/2

• 0

• -1

• 1

cos 5π/6

• -1/2

• 1/2

• √3/2

• -√3/2

sin 7π/6

• 1/2

• -1/2

• √3/2

• -√3/2

What is the value of cosine at 0

• 0

• 1/2

• 1

• √3 / 2