tg45=1
cos60=1/2
sin30=1/2
tg45+cos60+ sin30= 1+1/2+12= 1+2/2= 1+1=2
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tg45=1
cos60=1/2
sin30=1/2
tg45+cos60+ sin30= 1+1/2+12= 1+2/2= 1+1=2