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Tom [10]
3 years ago
6

In the diagram, CD = 15 and CF = 39. If line DF is tangent to point C, then DF = ?

Mathematics
2 answers:
Neko [114]3 years ago
5 0
I hope this helps you


DF^2+DC^2=FC^2



DF^2+15^2=39^2


DF^2=39^2-15^2


DF^2=24.54


DF=36
rusak2 [61]3 years ago
5 0
DF^2 = 39^2 - 15^2 = 1296
DF = square root of 1296 = 36
 
 
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