Question

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Answer 1

Use calculator just use cos(x) plug in the value to x.

Answer 2

like find cos(-2pi)?

Answer 3

i dont think im doing it right..I got -3.14 for the first one

Answer 4

@timo86m

Answer 5

you have to make sure you in radian mode not degree mode.

Answer 6

cos(-2pi)=1
cos 0 = 1
cos 2pi=1

Answer 7

ok well what about to other ones?

Answer 8

did you skip?

Answer 9

yup lol

Answer 10

lol oooookk

Answer 11

did you put the number in first THEN multiply cos?

Answer 12

i'll do it the quickes way is ot use excel or some kind of spreadsheet.

You put the number in the x of cos(x)

like if you are give 2 then it is cos(2)

Answer 13

ok..then do pi?

Answer 14

cos(pi)

Answer 15

cosine is the first coordinate on the unit circle
look at the circle on the last page of the attached cheat sheet and you will find the values

Answer 16

BTW starting with -2pi and on your answer should be
1
-0
-1
0
1
0
-1
-0
1


It makes sense cuzz cos is a repeating function.