Trig Graphing, Please help (1 Viewer)

kevda1st

Member
Joined
Sep 10, 2008
Messages
126
Gender
Male
HSC
2009
<a href="http://s237.photobucket.com/albums/ff210/kevda1st/?action=view&current=QQQSmall.jpg" target="_blank"><img src="http://i237.photobucket.com/albums/ff210/kevda1st/QQQSmall.jpg" border="0" alt="Photobucket"></a>
 

duckcowhybrid

Member
Joined
Dec 20, 2008
Messages
959
Gender
Male
HSC
2010
Part ii), just sketch y= sin x and y = cos x and do subtraction of ordinates for y = sin x - cos x

Part i) cos x = sin (x -a)

Therefore we have sin x - sin (x-a) = sin x + sinx cosa - cosx sina

And I dunno how to go from there. part iii) Just get it off your graph.
 

jet

Banned
Joined
Jan 4, 2007
Messages
3,148
Gender
Male
HSC
2009
For part a)

For part b) it is just a normal trig graph, but I did it for you anyway:

[Sorry, i couldn't put the units in terms of pi]

And, for part c) just draw the line y = 1, approximating the x-values where the two graphs intersect, and you have the answer.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top