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Help. ASAP. Thank you very much.

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In right triangle DEF, we have ∠D=25∘, ∠E=90∘, and EF=9. Find DE to the nearest tenth. You may use a calculator for this problem.

 Feb 24, 2021

3+2 Answers

 #1
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 I think its 40 I dunno

 Feb 24, 2021
 #2
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Let x = side DE


Tan(25)=9x

9x≈0.466

x≈90.466

x≈19.3

 Feb 26, 2021
 #3
avatar+379 
+3

Thanks!

calvinbun  Feb 27, 2021

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