October 2018 1 17 Report
Sudut a dan b saling berpelurus jika sudut a = 3x-15 derajat dan sudut b = x + 23 derajat . maka besar sudut cbd = .....
a. 43 derajat
b. 56 derajat
c. 60 derajat
d. 66 derajat

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