1/f = 1/si + 1/so
1/60 = 1/180 + 1/so
1/60 - 1/180 = 1/so
3/180 - 1/180 = 1/so
2/180 = 1/so
90 = so
jadi jawaban (A)
maaf kalo slah ya..menurut ku begitu
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1/f = 1/si + 1/so
1/60 = 1/180 + 1/so
1/60 - 1/180 = 1/so
3/180 - 1/180 = 1/so
2/180 = 1/so
90 = so
jadi jawaban (A)
maaf kalo slah ya..menurut ku begitu