Identifying Unit Circle Angles

Given the point (-1,0), which radian value are you at on your Unit Circle?

• π

• π/2

• 3π/2

• 2π

Mathematical Equivalence

OFF

Answer explanation

In which quadrant is 300° (a)  

• QI

• QII

• QIII

• QIV

Identify the Positive angle in both radians and degrees that represent point I.

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

• Opp

• OP

• Hyp

• x

• Adj

• y

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

• Hyp

• x

• Opp

• OP

• Adj

• y

In which quadrant is 150° ?

• QI

• QII

• QIII

• QIV

Identify the Positive angle in both radians and degrees that represent point D.

Mathematical Equivalence

ON