3 years ago

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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