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Alexus [3.1K]
4 years ago
13

Help a girl out pls n thx!!

Mathematics
1 answer:
navik [9.2K]4 years ago
3 0

Answer:

The answer is option A.

<h2>50 degrees</h2>

Step-by-step explanation:

To find angle C we use the cosine rule

That's

AB² = AC ² + CB ² - 2(AC)(CB)cos C

AC = 7.5

AB = 6

CB = 6.5

6² = 7.5² + 6.5² - 2(7.5)(6.5)cosC

36 = 56.25 + 42.25 - 97.5cos C

36 - 98.5 = - 97.5 cos C

-62.5 = - 97.5 cos C

cos C = -62.5 / - 97.5

C = cos ^-1 25/39

C = 50.1

The final answer is

<h3>C = 50°</h3>

Hope this helps you.

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Step by step solution :

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Equation at the end of step  1  :

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Step  2  :

Equation at the end of step  2  :

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Equation at the end of step  3  :

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