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FrozenT [24]
3 years ago
14

PLEASE SHOW WORK OR EXPLAIN

Mathematics
1 answer:
Ganezh [65]3 years ago
8 0

Answer:

<h2>cos(∠B) = CB/AB = ED/AD</h2>

Step-by-step explanation:

cosine=\dfrac{adjacent}{hypotenuse}\\\\adjacent=BC\\hypotenuse=AB\\\\\cos B=\dfrac{BC}{AB}\\\\\angle B\cong\angle D,\ \text{therefore}\ \cos B=\cos D.\\\\adjacent=ED\\hypotenuse=AD\\\\\cos B=\cos D=\dfrac{ED}{AD}

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