**MACHINE SHOP CALCULATION - OD1640 - LESSON 2/TASK 3**

FIGURE 16.

FIND SIDE OPPOSITE ANGLE "A."

FIGURE 17.

COTANGENT GIVEN, FIND ADJACENT SIDE.

4.

Calculations with Angles

a.

To add angles, arrange the degrees, minutes, and seconds in separate

columns and add each column separately.

Remember, in angles 60 seconds

makes a minute and 60 minutes makes a degree. Therefore, if the "seconds"

column adds up to 60 or more, subtract 60, or a multiple of 60, from that

column and add one minute, or the same multiple of one minute, to the

minutes column. If the "minutes"

**56**