Question: For the triangle below, the measure of angle C is $33^\circ$ and the measure of angle B is $70^\circ$. Find the measure of angle A.
1. **State the problem:** We are given a triangle with angles $C = 33^\circ$ and $B = 70^\circ$. We need to find the measure of angle $A$.
2. **Recall the triangle angle sum rule:** The sum of the interior angles of any triangle is always $180^\circ$. This means:
$$A + B + C = 180^\circ$$
3. **Substitute the known values:**
$$A + 70^\circ + 33^\circ = 180^\circ$$
4. **Simplify the sum of known angles:**
$$A + 103^\circ = 180^\circ$$
5. **Isolate angle $A$ by subtracting $103^\circ$ from both sides:**
$$A = 180^\circ - 103^\circ$$
6. **Calculate the value:**
$$A = 77^\circ$$
**Final answer:** The measure of angle $A$ is $77^\circ$.