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Alchen [17]
3 years ago
15

Help asap:( will give brainliest though!

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
3 0

Answer:

∡B = 60°

Step-by-step explanation:

find BC using Pythagorean Theorem:

5² + BC² = 10²

25 + BC² = 100

BC² = 75

BC = \sqrt{75}

BC = \sqrt{25}\sqrt{3} which is 5\sqrt{3}

this indicates that ∡B must be 60° because the ratio of sides in a 30-60-90 triangle are 1 : \sqrt{3} : 2

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Vinil7 [7]

Answer:

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