Question

If the sin 90° is 1, then the cos ____ °= _____.
a. 90° ; 1/2

b. 0° ; √2/2

c. 90° ; √3/2

d. 0° ; 1

Answer 1

IF the sine of 90 degrees is one?

Answer 2

i believe it is b

Answer 3

thx

Answer 4

i am sure it is not, since \(\cos(0)=1\)

Answer 5

i'm confused now. so it's not b. so then what is it?? id on't understand

Answer 6

no wait hold on its a

Answer 7

wouldn't it be d if cos0=1?

Answer 8

wait actually you r right
cos0 does = 1

Answer 9

you can see it in the calculator. if u have it just go to View>Scientific and then click on cos

Answer 10

BTW nice profile pic