Answer:
I think it's 4.52. Only if that's one of the options I guess. Good luck!
Your tax is $5.81
Your tip is $14.52
Your total is $92.93
In degrees: 3π/4 radians = 135°
Angle of x=135° is in the 2nd Quadrant and has negative cos x values and positive sin x values.
cos 135° = cos ( 90° + 45°)= - sin 45° =
sin 135° = sin ( 90° + 45° ) = cos 45° =
. You can also see the graph in the attachment.