Question

Which function's graph is shown below?
A. y = -sin x
B. y = cos x
C. y = sin x
D. y = -cos x

Answer 1

which do you think? @SantanaG?

Answer 2

I have no idea :(

Answer 3

Try using some numbers, it might help.

Answer 4

like what #s though?

Answer 5

can you find the sine of 0 ?

Answer 6

Like that :)

Answer 7

is sine of 0, 0?

Answer 8

yes

Answer 9

what about the cosine of zero ?

Answer 10

1?

Answer 11

goood,

looking at the graph , we see the line passes through the origin ,

which two options does this eliminate?

Answer 12

the cosine ones b/c it equals 1

Answer 13

ok good, so we have to choose between y= sin x, y= -sin x

Answer 14

yepp :)

Answer 15

-sinx

Answer 16

can you find the sine of π/2

Answer 17

yeah hold on plz

Answer 18

sine of pi/2=0

Answer 19

nope,

Answer 20

\[\sin(π/2)=\]

Answer 21

1

Answer 22

sorry

Answer 23

thats better

Answer 24

so we have these points