Find the supplementary angle of each of the following angles:
`(1)/(3)` right angle

Answer

To find the supplementary angle of one-third of a right angle, we can follow these steps:

### Step 1: Calculate one-third of a right angle.
A right angle is 90 degrees. To find one-third of it, we multiply:

\[ \text{One-third of a right angle} = \frac{1}{3} \times 90^\circ = 30^\circ \]

### Step 2: Determine the supplementary angle.
The supplementary angle is found by subtracting the angle from 180 degrees:

\[ \text{Supplementary angle} = 180^\circ - 30^\circ = 150^\circ \]

### Final Answer:
The supplementary angle of one-third of a right angle is \(150^\circ\).

---