Question

i want to solve the equation by factoriing...is this correct? then i want to find the solutions in the interval http://bamboodock.wacom.com/doodler/e6e9343d-379b-444e-8be0-9eae38debad1

Answer 1

yea the factors are correct

Answer 2

okay then i tried finding the intervals and i got this @mandonut

Answer 3

sin x=0 at 0 and 180

Answer 4

but the intervals in the book are 0, pi/4, 3pi/4 pi, 5pi/4 and 7pi/4 i dont knowhow they got that :((

Answer 5

http://www.google.com/imgres?imgurl=http://www.mathsisfun.com/geometry/images/circle-unit-304560.gif&imgrefurl=http://www.mathsisfun.com/geometry/unit-circle.html&h=279&w=366&sz=13&tbnid=_6Om16JZLkXUaM:&tbnh=86&tbnw=113&prev=/search%3Fq%3Dunit%2Bcircle%26tbm%3Disch%26tbo%3Du&zoom=1&q=unit+circle&usg=__pqqp_iY2gM5NSBXsxyKTPT02Jgg=&docid=dJkySTuOBEh4FM&hl=en&sa=X&ei=lWEbUMLOLsG3rQG8lYCoCw&sqi=2&ved=0CC0Q9QEwAg

Answer 6

find the angles at which y=0 and radical 2/2

Answer 7

and -radical 2/2 as well

Answer 8

but arent we talking about x and not y? :(((

Answer 9

you didn't miss nothing there ?!
see the attachment !