Choices are ; 5 pie over 9 17 pie over 18 4 pie over 9 9 pie over 18

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a. Find the angular speed of the sander disk in radians per second. b. What is the linear velocity of a point on the edge of the sander disk in feet per second?

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Z1 = 2 +2i , z2 =radical 3 -I I don't know how to do the radical symbol that's why I wrote it out.

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What angle measure, in radians, corresponds to −0.6 rotations around a unit circle? (Round your answer to two decimal places.) The book gives the answer (-3.77) but not the process of...