Other Angle Answer Sheet.docx

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1.

b.

a. 4 sin 2𝑥 b.

5 2

c.

sin 4𝑥

e. f. g. h. i. j. k.

a. b. c. d. e.

4𝜃 3

sin 1.2 sin 6 sin 4 cos 0.9 cos 10 cos 6 𝜋 sin

l. cos

a.

c.

√2 √2+2

d.

√−√2+2 4

b.

−4 5

1 √5

c. √

√3 2

b. c. d. a. b.

−25 26

c.

sing

a. √

7

b.

9 16

c.

−9 25

4 5 3 4

4.

5. ,

−1 2

, √3

1 2 1 2 1 2

[sin 6𝑥 − 𝑠𝑖𝑛2𝑥] [cos 𝑥 − cos 3𝑥] [sin 3𝑥 − sin 𝑥]

a. b.

−2 9 7 9

√3+1 4 3−1 √ 4 √3−1 4

1. a. b. c. d. e. f. g.

3.

7√8

[cos 6𝑥 +

Sum Product Identities

d. √26

a. ?

2

2.

2.

√3 2

1

cos 2𝑥]

4

4.

a.

Product Sum Identities 1.

2 sin 𝑎 sin 2𝑎 1 1 − 𝑡𝑎𝑛2 𝑥 cot 𝑥

a. √

√3 − 2

25

−√2+2 b. √

√3 2

√56 14

24

4

b. 0

c.

25

5

3.

b.

,

√2−2 a. √

3 𝜋

a. 6 sin 2𝑥 cos 2𝑥 b. 2𝑠𝑖𝑛2 2𝑥 c. 2𝑐𝑜𝑠 2 𝑥 − 2 cos 𝑥 − 1

d.

9 7

1.

2.

c. −

,

c.

, 4

Half Angle Identities

m. cos 1 n. 2 cos 4𝜃

a.

25

1

,

6.

c. cos 𝜃 d. cos

4√5 9 24

2 sin 2𝑡 cos 𝑡 2 cos 6𝑢 cos 𝑢 2 sin 7𝑤 sin 2𝑤 −2 cos 3𝑢 sin 2𝑢 0 √2 2 √6 2

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