Convert each angle measure to decimal degrees. If applicable, round to the nearest thousandth of a degree. See Example 4(a). ― 70° 48'

Perform each calculation. See Example 3. 90° ― 36° 18' 47"

Perform each calculation. See Example 3. 55° 30' + 12° 44' ― 8° 15'

Convert each angle measure to decimal degrees. If applicable, round to the nearest thousandth of a degree. See Example 4(a). 82° 30'

Convert each angle measure to decimal degrees. If applicable, round to the nearest thousandth of a degree. See Example 4(a). 112° 15'

Convert each angle measure to decimal degrees. If applicable, round to the nearest thousandth of a degree. See Example 4(a). 38° 42' 18"

Convert each angle measure to decimal degrees. If applicable, round to the nearest thousandth of a degree. See Example 4(a). 274° 18' 59"

Convert each angle measure to degrees, minutes, and seconds. If applicable, round to the nearest second. See Example 4(b). 174.255°

Convert each angle measure to degrees, minutes, and seconds. If applicable, round to the nearest second. See Example 4(b). ―25.485°