# Trignometric function (graph)

• Nov 19th 2009, 03:47 PM
ninja
Trignometric function (graph)
The vertical displacement
y of a boat that is rocking up and down on a lake. y was measured relative to the bottom of the lake. It has a maximum displacement of 12 meters and a minimum of 8 meters, a period of 3 seconds, and an initial displacement of 11 meters when measurement was first started (i.e., t = 0). assume at t = 0 function is increasing.

---> full period = 6 secs
therefore, b = 2 pi / 6 = pi/3
Amplitude = 2
D = 10

• Nov 20th 2009, 05:32 AM
HallsofIvy
Quote:

Originally Posted by ninja
The vertical displacement
y of a boat that is rocking up and down on a lake. y was measured relative to the bottom of the lake. It has a maximum displacement of 12 meters and a minimum of 8 meters, a period of 3 seconds, and an initial displacement of 11 meters when measurement was first started (i.e., t = 0). assume at t = 0 function is increasing.

---> full period = 6 secs
therefore, b = 2 pi / 6 = pi/3
Amplitude = 2
D = 10