First of all, 100cm makes 1m. So compare the statements
100cm=1m
2.5cm=Y
I represented the unknown with Y. Cross and multiply. 2.5 will multiply 1 to give 2.5 and Y will multiply 100 to give 100Y. That will be;
100Y=2.5
Divide both sides by 100
Y=2.5/100
But remember; 100cm is 1 meter. So that will be the same as;
Y=2.5cm/1m
which is C
Hope that helped. Have a nice day
Answer:
v ≈ (3.28512, 20.74146)
Step-by-step explanation:
v = 21(cos(81°), sin(81°))
v ≈ (3.28512, 20.74146) . . . . (x, y) components
The notation varies among authors. The vector can be written as ...
(r, θ) = (21, 81°)
r∠θ = 21∠81°
r cis θ = 21 cis 81°
v = 21·e^(i·9π/20)
(x, y) ≈ (3.28512, 20.74146)
v = 3.28512i +20.74146j . . . . perhaps this is the vector notation you want (i and j are unit vectors in the x- and y-directions, respectively)
67.89 squared
461x10
2x2305
4x1152.5
To convert to radians, multiply the number of degrees by π/180°.
60° in radians is
π/3.
Hope this helps!
