Docking a Boat

[nycmathguy]

Section 4.7

Part (a)

sin(theta) = 5/s

arcsin[sin(theta)] = arcsin(5/s)

theta = arcsin(5/s)

For (b) I simply evaluate for theta when s = 40 feet and again when x = 20 feet.

You say?

 

[MathLover1]

yes

 

[nycmathguy]

yes

I need to practice more word problems. I heard some nightmare stories about related rates as taught in Calculus 1. I hope not to see that for a while.