<span>you have to take arctan(0) to find the value of theta.
tan^-1 (x)=theta </span>
False because if the number was positive the opposite of that would be negative
Not sure if you wanted answers or explanation on what to do. Ill just do the explanation and if you want the answers just lmk C:
R=1/2 d, and C=pi*2r. So you basically take the given number and plug it into these formulas.
Step-by-step explanation:
x -0.1x = x(1-0.1) = 0.9x