Question

Use a refrence angle in the following: a) find 2 angles whose cosine is= - sqr 2/2 b) find 2 angles whose sin is= sqr 3/2

Answer 1

use unit circle

Answer 2

180 - 45
180 + 45

Answer 3

45+180 is one
-45+180 is another

Answer 4

lol

Answer 5

the other question you have
just look on the unit circle you will see that
sin(60)=sqrt{3}/2

Answer 6

another angle tyler will give...

Answer 7

sin(120)=????

Answer 8

Yeah 120

Answer 9

i wasnt paying attention lol

Answer 10

lol