Section 6.3
= Trigonometric
Equations
→
6.5.147
O Points:
0 of 1
The number of hours of daylight in City A is given by the following equation, where x is the
number of days after January 1. Within a year, when does City A have 11.5 hours
of daylight? Give your answer in days after January 1.
2π
y=3 sin
days
365 (x-79) +12
(Use a comma to separate answers as needed. Round to the nearest integer as needed.)
Set y =
11.5 = 3
Subtract
-0.5 =
Divide b
-0.166
To find a