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FrozenT [24]
3 years ago
6

Please help me thank you very much

Mathematics
2 answers:
olasank [31]3 years ago
5 0
Question 1:

Let's use the Pythagorean theorem.
a=12
b=15
c=20

If c^2\ \textless \ a^2+b^2, then the angle is acute.
If c^2\ \textgreater \ a^2+b^2, then the angle is obtuse.
If c^2=a^2+b^2, then the angle is right.

c^2=400
a^2+b^2=144+225=369

\boxed{c^2\ \textgreater \ a^2+b^2}

Thus, the angle is obtuse.

Question 2:

Use the Pythagorean theorem.
a=b=8
c=?
a^2+b^2=c^2

8^2+8^2=c^2
c^2=64+64
c^2=128

c= \sqrt{128}
c= \sqrt{64*2}
\boxed{c=8 \sqrt{2} }

That's your answer.
Hope this helps! :)
8_murik_8 [283]3 years ago
4 0
Here u go
1.B obtuse
2. C. 8/2
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