Answer:
22.62
Step-by-step explanation:
Cos=12/13
12/13= 0.9231
Cos^-1(0.9231)=22.62
Y= mx+b (slope intercept form)
m= the slope (in this case 8)
b= the y-intercept (-3)
the answer: y=8x-3
Everything except for 4 is correct, number 4 is c.
Perpendicular = Negative Reciprocal
-3 --> -1/3 ---> 1/3
Therefore it is C