Homework Answers
A.B=ABcos(theta)=34*61*cos(70-20)=1333.14
B.(A+C)=B.A+B.C
B.C=CBcos(theta)=21*61*cos(70+20)=0
B.(A+C)=A.B=ABcos(theta)=34*61*cos(70-20)=1333.14
answers is 110 degree above and 70 degree below
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