Question

What is the y-value of cos(x) when x = 90°?

Answer 1

HI!!

Answer 2

Hello

Answer 3

are you looking for \[\cos(90^\circ)\]?

Answer 4

is that the answer?

Answer 5

lol no dear, i think that is what you are trying to find, the cosine of ninety degrees

Answer 6

ok

Answer 7

i dont understand cosine at all

Answer 8

i dont

Answer 9

so 1 is the answer?

Answer 10

now you do

Answer 11

look at the unit circle on the last page of the cheat sheet
find the angle \(90^\circ\) and look at the coordinates of that point
you will see \((0,1)\) the first coordinate is cosine, the second is sine

Answer 12

so \[\cos(90)=0,\sin(90)=1\]

Answer 13

ah i see

Answer 14

i made a mistake earlier and said \(\cos(90)=1\) what was wrong
it is \(\cos(90)=0\)

Answer 15

its looking for the y value, so the answer is still 1?