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a. 45×π/180=π/4 rad
b. 54/100×π/180=3π/10 rad
c. 36×π/180= π/5 rad
d. 874/10 ×π/180= 437×π/90 rad
menjadi bentuk derajat
a π/12×180/π= 15 derajat
b 7π/8×180/π= 315/2= 157,5 derajat