a) 4cos60°=4·1/2=2
b) 5tg²45°=5·1²=5·1=5
c)2sin30°=2·1/2=1
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a) 4cos60°=4·1/2=2
b) 5tg²45°=5·1²=5·1=5
c)2sin30°=2·1/2=1