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il63 [147K]
2 years ago
11

Find the cosine of ∠I.

Mathematics
1 answer:
denis-greek [22]2 years ago
7 0

Answer:

\sqrt{\frac{3}{5} } .

Step-by-step explanation:

1) cos(I)=IH/IG;

2) \ IG=\sqrt{IH^2+GH^2} =10;

3) \ cos(I)=\frac{2\sqrt{15}}{10}=\frac{\sqrt{15}}{5}=\sqrt{\frac{3}{5}}.

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