Trigonometric Half Angle Identities

Question 1

What is the exact value of sin⁡(157.5°)?

Revolt · Accepted Answer

StartFraction StartStartRoot 2 minus StartRoot 2 EndRoot EndEndRoot Over 2 EndFraction

Question 2

cos x 1 + cos x ✔ 1 - cos x

Revolt · Accepted Answer

1 - cos x

Question 3

What is the exact value of ?

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/EVresources/aa42bf051ac0f519e2f09fbb09041aa1.png

Question 4

the square root is negative ✔ the cosine expressions are reversedcosine 330 degrees is one half

Revolt · Accepted Answer

✔ the cosine expressions are reversed

Question 5

What is the value of and x is in quadrant III?

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/EVresources/e76647bd6ffbf8743ee5b8ca583597e7.png

Question 6

♦: [___]

Revolt · Accepted Answer

Tangent half-angle identity; ♦:: Tangent half-angle identity; ♣:: 1 + cos x; ◼:: 1 - cos x

Question 7

Find the solution(s) to the equation on the interval 0 ≤ x ≤ 2π.Check all that apply.

Revolt · Accepted Answer

0; StartFraction pi Over 3 EndFraction; StartFraction 5 pi Over 3 EndFraction

Question 8

What are the solutions on the interval 0° ≤ x < 360°? Solutions: {°, °}

Revolt · Accepted Answer

Part 1: 120; Part 2: 180

Question 9

Which of these expressions is the simplified form of the expression ?

Revolt · Accepted Answer

StartFraction 1 Over 1 + cosine (x) EndFraction

Question 10

Select the place in which an error first occurs in the proof of .

Revolt · Accepted Answer

Statement 2

Trigonometric Half Angle Identities Answers