Section 7.1 Angles and Their Measure Copyright © 2013 Pearson Education, Inc. All rights reserved.

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Section 7.1 Angles and Their Measure Copyright © 2013 Pearson Education, Inc. All rights reserved

Draw the following agles a.-45° b. 135° c.180° d. -405° Copyright © 2013 Pearson Education, Inc. All rights reserved

(a)Convert 40°12 ’ 5 ” to a decimal in degrees. Round the answer to four decimal places. (b)Convert ° to the D°M ’ S ” form. Round the answer to the nearest second. Copyright © 2013 Pearson Education, Inc. All rights reserved

Try this Convert 50°6’ 21” into a decimal in degrees. Round your answer to two decimals Convert 32.25°to D°M’ S” Copyright © 2013 Pearson Education, Inc. All rights reserved

Radians Copyright © 2013 Pearson Education, Inc. All rights reserved

If θ is in degrees, must be changed to radians

Find the length of the arc of a circle of radius 4 meters subtended by a central angle of 0.5 radian. Copyright © 2013 Pearson Education, Inc. All rights reserved

Try this. s denotes the length of the arc of a circle of radius r subtended by the central angle θ. Find the missing quantity. a., s = 2 square feet, r = ? b.r = 2 inches,, s = ? Copyright © 2013 Pearson Education, Inc. All rights reserved

(a) 30° (b) 120° (c) – 60° (d) 270° (e) 104 ° Copyright © 2013 Pearson Education, Inc. All rights reserved

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. Copyright © 2013 Pearson Education, Inc. All rights reserved

Homework P. 513 # 12 – 84 (X3) 93, 94 Copyright © 2013 Pearson Education, Inc. All rights reserved