Question

In the triangle below, which equation can be used to solve for x?

Answer 1

4th option

Explanation:

We require to find the 3rd angle in the triangle, that is

third angle = 180° - (75 + 50)° = 180° - 125° = 55°

Using the Sine rule in the triangle

`(x)/(sin75)` =
`(13)/(sin55)` ( cross- multiply )

x × sin55° = 13 × sin75° ( divide both sides by sin55° )

x =
`(13sin75)/(sin55)`