scottbine
scottbine scottbine
  • 12-10-2018
  • Mathematics
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What is the value of cosA ?

What is the value of cosA class=

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 12-10-2018

Answer:

cos(A) = 24/25 = 0.96

Step-by-step explanation:

SOH CAH TOA tells you that ...

... cos(A) = AB/AC

We are given AB = 24, but we must calculate AC using the Pythagorean theorem.

... AC² = AB² + BC²

... AC² = 24² + 7² = 576 + 49 = 625

... AC = √625 = 25

Now, we have sufficient information to find cos(A):

... cos(A) = 24/25 = 0.96

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