Question

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

Answer 1

Answer:

BC ≈ 370 m

Step-by-step 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 = $\sqrt{137331.8656}$

  ≈ 370.58314

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

Answer 2

370 hope it is correct