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BaLLatris [955]
2 years ago
15

Solve for x in the triangle A 1.7 B 2.6 C 2.7 D 3.0

Mathematics
2 answers:
11Alexandr11 [23.1K]2 years ago
3 0

Answer:

A

Step-by-step explanation:

Given 2 sides and the included angle use the Cosine rule to solve for x

x² = 1.6² + 1.1² - (2 × 1.6 × 1.1 × cos78° )

    = 2.56 + 1.21 - ( 3.52 × cos78° )

   = 3.77 - 0.7318

   = 3.0382

Take the square root of both sides

x = \sqrt{3.0382} = 1.7 → A

Jet001 [13]2 years ago
3 0

Answer:b

hope this helps

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3 years ago
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Answer:

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