Answer:
For both graph I would choose the following points: 0°, 90°, 180°, 270° and 360°. I would connect the points (in both cases) with an smooth arc.
Step-by-step explanation:
x sin(x) cos(x)
0° 0 1
90° 1 0
180° 0 -1
270° -1 0
360° 0 1
car b
car a = 170/4=42.5 mph
car b = 306/4=76.5 mph
-2 = 4r + s
subtract 4r from both sides of the equation
-2 -4r = s