Step 1 :First, we need to find the antiderivative of the function \(\sin(\theta)\), which is \(-\cos(\theta)\).
Step 2 :Next, we apply the Fundamental Theorem of Calculus, which states that the definite integral of a function from a to b is equal to the antiderivative evaluated at b minus the antiderivative evaluated at a. In this case, a is 0 and b is 3.
Step 3 :So, we evaluate \(-\cos(\theta)\) at \(\theta = 3\) and \(\theta = 0\), and subtract the two values.
Step 4 :The exact value of the integral is thus \(-\cos(3) - (-\cos(0))\), which is approximately 1.9899924966004454.
Step 5 :For the approximate value, we can use numerical integration methods. The approximate value of the integral is also approximately 1.99.
Step 6 :Final Answer: The exact value of the integral is \(\boxed{1.99}\) and the approximate value is also \(\boxed{1.99}\).