Help with finding minimum value, and x and y coordinates?
I was able to come up with this equation
-100*sin θ *(cos θ + 1)
from the information I was given about the original problem.

Question

Help with finding minimum value, and x and y coordinates?
I was able to come up with this equation 
-100*sin θ *(cos θ + 1) 
from the information I was given about the original problem.

anonymous · Answer

Sorry I actually need help finding the Maximum not the minimum.

anonymous · Answer

The original problem that I used to get this equation was 
A rain gutter is to be constructed by folding up the edges of a metal sheet. The metal sheet will be divided into thirds, so that one third is folded up on each side and one third is left in the middle. The width of the metal sheet is initially 30cm., so that each third will be 10cm. wide.