Question

Which expression represent the approximate length of BC HEEEEELLLLPPP!!!

Answer 1

A

Explanation:

Using the Sine rule in Δ ABC

`(sinA)/(BC)` =
`(sin38)/(AB)` , substitute values

`(sin66)/(BC)` =
`(sin38)/(3)` ( cross- multiply )

BC sin38° = 3 sin66° ( divide both sides by sin38° )

BC =
`(3sin66)/(sin38)` → A