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den301095 [7]
2 years ago
6

Order the angle measures , , and from least to greatest.

Mathematics
2 answers:
Anestetic [448]2 years ago
5 0

<u>Answer</u>:

least to greatest: ∠I < ∠J < ∠H

<u>Explanation</u>:

<u>angle I: </u>

cosI = \frac{10^2+12^2-8^2}{2*10*12}

I = cos^{-1} (\frac{3}{4} )

I = 41.41°

<u>angle H:</u>

cosH = \frac{10^2+8^2-12^2}{2*10*8}

H = cos^{-1} (\frac{1}{8} )

H = 82.82°

<u>angle J:</u>

cosJ = \frac{8^2+12^2-10^2}{2*8*12}

J = cos^{-1}(\frac{9}{16} )

J = 55.77°

<em>They sum up to 180°, so the steps are correct.</em>

Neko [114]2 years ago
4 0

Mark the theorem below

  • The angle which measures biggest the opposite side of that angle is biggest.

Here

  • 8<10<12
  • JH<IH<JI

Now

  • <I < <J < <H
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