Answer:
18-4s
Step-by-step explanation:
15+3-4s
You just simplify to get 18-4s.
Hope that helped!
Answer:
6:1
Step-by-step explanation:
Answer:
0.8660
Step-by-step explanation:
cosine theta = -1/2
theta = cosinearctan(-0.5)
theta = 120
sine4theta = sine 4(120)
= sine480
= 0.8660
Line a and b are perpendicular
