Reference Angles of Unit Circle

What is the reference angle for 275°?

• 85°

• 95°

• -85°

• -95°

What is the reference angle for 240°?

**DO NOT TYPE A DEGREE SYMBOL**

What is the reference angle for 125°?

• 235°

• 125°

• 75°

• 55°

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

• Hyp

• OP

• Opp

• x

• Adj

• y

What is the reference angle?

• 112

• 68

• 158

• 248

Find the reference angle for an angle measuring -310⁰.

**DO NOT TYPE A DEGREE SYMBOL**

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

• Opp

• y

• Hyp

• OP

• Adj

• x