In the diagram of ∆def, the altitude from right angle dfe has been drawn to de. if dg = 4 and ge = 8, then which of the following is the length of fg?

1)4√2
2)3√10
3)12
4)6

Option 1.

Step-by-step explanation:

we know that

----> by complementary angles

and

so

In the right triangle DFG

---> equation A

In the right triangle EFG

---> equation B

equate equation A and equation B

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