The Unit Circle

Question 1

Identify the reference angle Phi for each given angle, Theta . When theta = 300 degrees, phi = degrees.

Revolt · Accepted Answer

Part 1: 60; Part 2: 45; Part 3: 60; Part 4: 30; 60

Question 2

When theta = 225 degrees, phi = degrees.

Revolt · Accepted Answer

45

Question 3

When theta = negative 210 degrees, phi = degrees.

Revolt · Accepted Answer

30

Question 4

270°360°450°540°

Revolt · Accepted Answer

540°

Question 5

Consider all angles whose reference angle is 45° with terminal sides not in Quadrant I.The angles that share the same cosine value as cos 45° have terminal sides in quadrant IIIII✔ IV(none of the quadrants).

Revolt · Accepted Answer

✔ IV

Question 6

The angles that share the same sine value as sin(45°) have terminal sides in quadrant ✔ IIIIIIV(none of the quadrants).

Revolt · Accepted Answer

✔ II

Question 7

The angles that share the same tangent value as tan(45°) have terminal sides in quadrant II✔ IIIIV(none of the quadrants).

Revolt · Accepted Answer

✔ III

Question 8

Find the coordinates of the point (x, y) shown on the unit circle. x = ?

Revolt · Accepted Answer

-1/2

Question 9

y = ?

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/EVresources/3111-13-04-20-01-task/mc001-3.jpg

Question 10

Identify the reference angle [image 1] for each given angle, [image 2] . [image 3] degrees.

Revolt · Accepted Answer

60; 45; 30

The Unit Circle Answers

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