Question

Please help:) I’m stuck

Answer 1

`x` = 4.9 (1 dp)

Explanation:

Use trig ratio
`sin(\theta)=(O)/(H)`

where
`\theta` is the angle, O is the side opposite the angle and H is the hypotenuse of a right triangle.

Given:

• 
  `\theta=55`
• O =
  `y` = 4
• H =
  `x`

`\implies sin(55)=(4)/(x)`

`\implies x=(4)/(sin(55))`

`\implies x = 4.9` (1 dp)