5 because if you subtract 13 from 18 you will get five and might be her avrage
1 because he HAD 5 and if he gave his friend 4 than he has 1 left, 5-4=1 my friend.
Answer:
C
Step-by-step explanation:
Answer:
Yes
Step-by-step explanation:
1) Cos 300 = Cos (360 - 60) = Cos 60 {Cos 360 - theta = Cos theta}
= 1/2
Sin 300 = Sin (360 - 60) = -Sin 60 = 
3) 3π/4 = 3*180/4 = 135
Cos 135 = Cos (90 + 45) = -Cos 45 = 
Sin 135 = Sin (90 + 45) = Sin 45 = 