I'm trying to figure out this mathbits homework. I don't think I'm getting this particular answer because the URL won't work.
Find the exact value of sinetheta when costheta = 3/5 and the terminal side of theta is in quadrant four
Thanks so much
All you need to do is draw a right triangle and solve it. Remember that . The hypotenuse is 5, the adjacent side is 3, and so the pythagorean theorem gives . So the remaining side is . So sine should be . If the terminal side is in quadrant four, then what is the sign of sine?
Last edited by mr fantastic; Jan 6th 2010 at 08:20 PM.