10sin30*+cos60*+20sin45*-15sin60*=10.48kN...how
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sin30=0.5 (1/2)
cos 60=0.5 (1/2)
sin 45=0.707 (1/sqrt(2))
sin 60= 0.866 (3/sqrt(2))
10(0.5)+(0.5)+20(0.707)-15(0.866)
cos 60=0.5 (1/2)
sin 45=0.707 (1/sqrt(2))
sin 60= 0.866 (3/sqrt(2))
10(0.5)+(0.5)+20(0.707)-15(0.866)
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