Answer:
use calculating
Step-by-step explanation:
get a calculator and type it
Answer: Option 'C' is correct.
Step-by-step explanation:
Since we have given that

An arc is a part of total circumference of circle and length of that arc is the measurement of linear distance.
Since we know the formula for "Length of an arc " , we get

Hence, Option 'C' is correct.
Substitute
, so that

Then the resulting ODE in
is separable, with

On the left, we can split into partial fractions:

Integrating both sides gives




Now solve for
:

