Angles and Unit Circle

Which LETTERS on the given unit circle are related to the given type of reference angle?

45°

Which LETTERS on the given unit circle are related to the given type of reference angle?
\frac{\pi}{2} radians

State the EXACT COORDINATE on the given unit circle is related to the given LETTER of reference angle? (use root or sqrt to signify radical in answer when needed) given letter L

Tags

CCSS.HSF.TF.A.2

State the EXACT COORDINATE on the given unit circle is related to the given LETTER of reference angle? (use root or sqrt to signify radical in answer when needed) given letter D

Tags

CCSS.HSF.TF.A.2

What type of circle plays a large role in understanding trig functions?

• An elliptic circle

• The unit circle

• The perfect circle

• The Pythagorean circle

Tags

CCSS.HSF.TF.A.2

• 1
• 2
• 3
• 4

Tags

CCSS.HSF.TF.A.2

• undefined

Answer explanation

Tags

CCSS.HSF.TF.C.9

Using θ as a reference angle, mark the triangle sides as Opp, Adj, and Hyp. Label these on the triangle on your paper.

• Adj

• y

• Hyp

• OP

• Opp

• x

Tags

CCSS.HSG.SRT.C.6

What is the radius of a unit circle?

• 1

• 2

• 1/2

• 0

Tags

CCSS.HSF.TF.A.2

Which function corresponds to the y-coordinate on the unit circle?

• sine

• cosine

• tangent

• secant

Tags

CCSS.HSF.TF.A.2