Angles and Their Measure

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Presentation transcript:

Angles and Their Measure Section 6.1 Angles and Their Measure

Convert 40°12’5” to a decimal in degrees Convert 40°12’5” to a decimal in degrees. Round the answer to four decimal places. Convert 78.562° to the D°M’S” form. Round the answer to the nearest second.

Radians

Find the length of the arc of a circle of radius 4 meters subtended by a central angle of 0.5 radian.

(a) 30° (b) 120° (c) – 60° (d) 270° (e) 104 °

Figure 13 (a) Figure 13 (b)

Find the area of the sector of a circle of radius 5 feet formed by an angle of 60°. Round the answer to two decimal places.

Linear Speed Angular Speed

A child is spinning a rock at the end of a 3-foot rope at the rate of 160 revolutions per minute (rpm). Find the linear speed of the rock when it is released. 3