The difference cos(120° - 45°) is most likely the form you would use with that formula.
_____
The "difference" cos(30° + 45°) could also be used, where 45° is rewritten as -(-45°), or 30° is rewritten as -(-30°).
Answer:
80 wheels
Step-by-step explanation:
20 x 2 = 40, 40 bycicle wheels.
10 x 4 = 40. 40 car wheels.
40+40 = 80
80 wheels total
Answer:
$93.50
Step-by-step explanation:
$5.50 x 17 = $93.50
Hope that helps!
