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madreJ [45]
3 years ago
10

Solve the triangle for x.

Mathematics
1 answer:
viktelen [127]3 years ago
3 0

Answer:

Option C

Step-by-step explanation:

By applying cosine rule in the given triangle,

BC² = AB² + AC² - 2(AB)(AC)cosA

(11)² = 8² + 7² - 2(8)(7)cosx

121 = 64 + 49 - 112cos(x)

cos(x) = -\frac{8}{112}

x = \text{cos}^{-1}(-\frac{1}{14})

x = 94.1°

Therefore, Option C will be the correct option.

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does the above make sense?

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