1 / cos^2 O - 3 / cos O - 2 = 0
1 - 3 cos O - 2 cos^2 O = 0
2 cos^2 O + 3 cos O - 1 = 0
cos O = 0.2807 , -1.78 ( -1.78 cannot be a solution)
O = 74 degrees (from 0.2807) another solution is 360-74 = 286 degrees
Its D
4/x-1 would be the equation written from that statement.
hello don't worry the answer is 9 seconds
X=3+2y
X+y=39
3+2y+y=39
3y=39-3=36
Y= 12,x= 3+2*12=27
