53 + 4b=21--> 4b = -32--> b=-8
First you have to what either the x or y variable mean.
Answer:
0.5* sin(x)
Step-by-step explanation:
As well known sin (2A)= 2sin(A)*cos(A)
As in our case A=x/2 => cos(x/2*sin(x/2)=1/2*sin(x)=0.5*sin(x)
Answer:
4 1/2 if you are adding them together
Step-by-step explanation:
