Hello!
The answer is:
The first option,
[tex]y=3.5[/tex]
Why?
To solve the problem, we need to follow the next steps:
- Set your calculator in degree mode to calculate Cos(64°)
- Isolate Y by multiplying each side of the equation by 8.
Solving we have:
[tex]Cos(64\°)=\frac{y}{8}\\\\0.44=\frac{y}{8}[/tex]
Multiplying each side of the equation by 8, we have:
[tex](0.44)*8=\frac{y}{8}*8\\3.52=y[/tex]
[tex]y=3.52[/tex]
Rounding to the nearest tenth, we have:
[tex]y=3.5[/tex]
Hence, the answer is the first option,
[tex]y=3.5[/tex]
Have a nice day!
