Trigonometric Sum Identities

Question 1

What is the exact value of sin 165⁰?

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/EVresources/fa9724a5101c152c01ad208b043c287f.png

Question 2

1✔ 0.50

Revolt · Accepted Answer

✔ 0.5

Question 3

0.5 ✔ 01

Revolt · Accepted Answer

✔ 0

Question 4

Use the drop-down menus in the derivation of the cosine sum identity:

Revolt · Accepted Answer

✔ C; = +: C; = +: D

Question 5

A B C ✔ D

Revolt · Accepted Answer

✔ D

Question 6

23✔ 1

Revolt · Accepted Answer

✔ 1

Question 7

What is the exact value of ?

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/EVresources/0c8cc300dc1b42c01a95d6df2566cee5.png

Question 8

What is the exact value of sin 170⁰ cos 55⁰ + cos 170⁰ sin 55⁰?

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/EVresources/9579c63c36f4fafc51c40242b9f9bafb.png

Question 9

Use the drop-down menus in the derivation of the sine sum identity:

Revolt · Accepted Answer

D; = cos(y) – sin(x)sin(y): B

Question 10

Choose from the drop-down menus to match the trigonometric expression with its value.

Revolt · Accepted Answer

✔ 1; =: 1; =: 0.5; =: 0

Trigonometric Sum Identities Answers