3 years ago

In △CDE , DE=10 , CE=5 , and m∠E=58∘ .

Mathematics

1 answer:

garik1379 [7]3 years ago

6 0

Answer:

8.49 units

Step-by-step explanation:

CD is the length opposite angel E

Use cosine law

CD² = 10² + 5² - 2(10)(5)cos(58)

CD² = 72.00807358

CD = 8.485757101

CD = 8.49 units

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