two forces magnitude of 10N. Their resultant is equal to 20N. Then angle between them is: ( answer with reason)
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Answer:
R=√A^2+B^2+2ABcos©
20^2=10^2+10^2+2×10×10×cos©
400=100+100+200×cos©
400-200=200cos©
200/200=cos©
1=cos©
©=0
therefore these two vectors are parallel to each other
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