Answer:
√65/11
Step-by-step explanation:
h=11
p=√56
b=? (L as reference)
By pythogorean theorem,
h^2=p^2+b^2
b=√(h^2-p^2)
b=√(11^2-√56^2)
b=√(121-56)
b=√65
cosL=b/h
You can put it in decimal yourself if you want.
