Answer:
B
Step-by-step explanation:
Cos(0)=1
since the diagram shows x as (1,0)
Answer:

Step-by-step explanation:
Solve like a normal equation by isolating the variable and then dividing by the coefficient.

Answer:
is their answers? that we can see or a pic?
Answer:
perimeter 140
Step-by-step explanation:
60L x 10W = 600
60(2) + 10(2) = 140
:D