Answer:
Step-by-step explanation:
take 45 degree as reference angle
using sin rule
sin 45=opposite/hypotenuse
1/[tex]\sqrt{2}[/tex]=l/11[tex]\sqrt{2}[/tex] (do cross multiplication)
l[tex]\sqrt{2}[/tex]=11[tex]\sqrt{2}[/tex]
l=11[tex]\sqrt{2}[/tex]/[tex]\sqrt{2}[/tex]
l=11
