a) What is the magnitude of the resultant force (in Newtons)?   b) What is the angle of the resultant force with respect to x-axis? (positive values only)

Glencoe Physics: Principles and Problems, Student Edition
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Author:Paul W. Zitzewitz
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Chapter5: Displacement And Force In Two Dimensions
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Forces of 60 N at 130 degrees, and 20 N at an angle of 210 degrees, measured counter-clockwise from the positive x-axis, act on an object. 

a) What is the magnitude of the resultant force (in Newtons)?
 

b) What is the angle of the resultant force with respect to x-axis? (positive values only)

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