Question

myself and my daughter is having issues with this problem. we keep coming up 11.96 and rounding it to 12 but it saying it is wrong

Answer 1

using trigonometric ratio

`\tan 23^(\circ)=(13)/(y)`
`\begin{gathered} y=(13)/(\tan 23^(\circ)) \\ y=(13)/(0.42447481621) \\ y=30.6260807557 \\ y\approx30.6 \end{gathered}`

Note

tan 23 = opposite/adjacent