1. If V1 and V2 be two vectors at 900 from each other, having magnitudes of 10 and 20 units each, what will be the value of V1.V2 ?
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An angle of 60 degrees is an acute angle
Declination Diagram
The complement of any angle is the angle which adds to it to make 90 degrees. In this instance, an angle of 60 degrees adds to 30 to make 90 degrees. Therefore, the complement of 30 degrees is 60 degrees.
Each angle is 60 degrees.
Each angle measures 60 degrees