Question

Please help me find the answer to the equation.❤️​

Answer 1

370 hope it is correct

Answer 2

BC ≈ 370 m

Explanation:

Using the Cosine rule in Δ ABC

a² = b² + c² - 2bccosA

= 450² + 220² - (2 × 450 × 220 × cos55°)

= 202500 + 48400 - 198000cos55°

= 250900 - 113568.1344

= 137331.8656 ( take square root of both sides )

a =
`√(137331.8656)`

≈ 370.58314

Then BC ≈ 370 m ( to the nearest 10 m )