February 2019 1 43 Report
Pada segitiga ABC diketahui sisi a=4 cm, b=6 cm, dan besar < B = 45derajat. Nilai cos A adalah.....
a. 1/5√2
b. 1/6√6
c. 1/6√7
d. 1/3√2
e. 1/3√7
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