Recall
Solution
Using cosine rule
[tex]a^2=b^2+c^2-2bc\text{ cosA}[/tex][tex]\begin{gathered} x^2=180^2+200^2-2\times180\times200\times cos75 \\ x^2=32400+40000-18634.9712 \\ x^2=53765.02876 \\ x=\sqrt{53765.02876} \\ x=231.87287 \\ \end{gathered}[/tex]
The final answer
[tex]232m\text{ \lparen nearest integer\rparen}[/tex]
