Question

Explain and answer please and thank you

Answer 1

Since the lake is an ellipse, AC and BC will be different.

Set your calculator to degree mode.

AC/sin(81°) = 100/sin(51°)

AC = 100sin(81°)/sin(51°) = 127.09 m

BC/sin(48°) = 100/sin(51°)

BC = 100sin(48°)/sin(51°) = 95.62 m