Answer:
a=2/3
Step-by-step explanation:
4/3 divide by 2/3 and you get 2/3
Answer:
H
Step-by-step explanation:
Answer:
Step-by-step explanation:
Sorry i dont know
Answer:
Hey there!
The answer is 2 1/4, which is 2.25
Let me know if you have any other questions!
Answer:
-sqrt(3)/2
Step-by-step explanation:
Use double angle identity for sin(2x)
sin(2x)=2sin(x)cos(x)
We are given sin(x)=-1/2 so we already have so far that:
sin(2x)=2(-1/2)cos(x)
sin(2x)=-1*cos(x)
We just need to find cos(x).
x is in the fourth quadrant so cosine will be positive there
knowing the unit circle we should know that if sin(x)=-1/2 then cos(x)=sqrt(3)/2 while in 4th quadrant.
So the answer is sin(2x)=-1*sqrt(3)/2=-sqrt(3)/2
