Question

how to convert sine to cosine and vise-versa? pls help me asap

ex. cos 180 -> sin
sin 270 - >cos

Answer 1

well do u know the values of those 2 ?

Answer 2

like what cos 180 equals and what sin 270 equals? this should be automatic. think of the unit circle.

Answer 3

yes i do i hav the table with me
cos 180 = -1
and sin 270 = -1

but i need the process on how to convert them

Answer 4

Where do u think sin is -1 and where do u think cos is -1?

Answer 5

this should be obvious

Answer 6

sin - 1 is in the -y axis. and cos under the -y axis 0

but i just wanna knw the process... like show how to do it and sutff

Answer 7

but in degrees.

cos 180=-1=sin270
likewise
sin270=-1=cos180

do u know why

Answer 8

y?

Answer 9

basically from above, sin(x)=y and cos(x)=x

so our point on the plane is in form of (cos(x) , sin(x))