how do we know how many degrees between 0and360 each equation has for ex : sin(x)= 0.728 or sin(x)=-0.279
+130516 If I'm interpreting this correctly.......you want to know how many solutions each equation has between 0 and 360 degrees....
Each equation will have two values between 0 and 360 that make it true......the first one will have a solution in the 1st and 2nd quadrants and the second will have a solution in the 3rd and 4th quadrants.
