please help!

I get really confused with which way round they are!

Posted Sun 5th June, 2011 @ 21:16 by

Kelly:)
sin graph

starts at (0,0) goes to (90,1) then down to (180,0) keeps going down to (270,-1) then up to (360,1)

cos graph

starts at (0,1) goes down to (90,0) keeps going down to (180, -1) then up to (270,0) keeps going up to (360,1)

tan graph

starts at (0,0) then up to whatever tan 89.99999... is. stops at 90. starts again on the minus y axis and crosses the x axis at (180,0) keeps going up. stops at 270 then starts again on the minus y axis and goes to (360,0)

Answered Mon 6th June, 2011 @ 12:08 by

Pui Pui
sine graph has two curves starting at -ve

cosine graph has one curve and it starts +ve

And the tan graph has a curved live from 0-89 +ve at 90 their is a dotted line

Answered Sun 5th June, 2011 @ 21:36 by

kirsty greener
Thanks but where do they each cross the x and y axis'?

Answered Sun 5th June, 2011 @ 21:53 by

Kelly:)