Cotx = Cosx/sinx
1/Cotx = sinx/cosx
Sinx + cosx *1/cotx = sinx + cosx * sinx/cosx = 2sinx
1220*24 = 29,280 per year
multiply that by number of years until he retires:
761280 / 29280 = 26 years
292800 / 29280 = 10 years
the other 2 arent even years so it should be one of those 2. I would say the larger number
The answers are:
x = 13
y = -11
