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vodomira [7]
3 years ago
6

URGENTLY ANSWER, RIGHT TRIANGLE TRIGNOMETRY

Mathematics
1 answer:
Otrada [13]3 years ago
3 0

So for this you will be doing proportions. Your equation will look like this: \frac{5}{DE} =\frac{DE}{20}


Firstly, cross multiply: DE^2=100


Next, square root both sides of the equation, and your answer should be DE=10

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