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PLEASE SHOW WORK OR EXPLAIN
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PLEASE SHOW WORK OR EXPLAIN

PLEASE SHOW WORK OR EXPLAIN-example-1
User GaryO
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1 Answer

4 votes

Answer:

cos(∠B) = CB/AB = ED/AD

Explanation:


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

User Sruj
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9.0k points
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