A little help with a math problem....

Taygoo · 06-29-09, 12:38 PM

Hallo can any of you do some math...:-)

I have a problem I just can not solve,

1) I need to find a and b in the formula

2) find the direction and radius then Peter has "worked" 3 km arc line

Peter must treasure hunt in the woods and have been told that he can find the treasure to closely follow the path of a logarithmic Spira, at a given starting point. If he walk 3 km, on the arc line. He will find the treasure.

Peter knows a logarithmic spiral is as follows:

Startpunkt=STARTPOINT

He has also been told that when he has revolved around 180 degrees (marked with A in the figure), he is 86.23 meters from where he started, and after 360 degrees (marked with B in the figure), he is 75.41 meters where he started.

Fortunately, Peter also knows the formula for a logarithmic spiral:

, and he assumes that the starting point corresponds to Theta = zero.

With this knowledge puts Peter down first and count (long) on the figures. Then he prepared for the trip, and he does not actually become dizzy by.

Taygoo - Have tried to solve this in days now...:-)

06-29-09, 12:38 PM	#1
Taygoo Seaman Join Date: Mar 2009 Location: Denmark - Posts: 34 Downloads: 0 Uploads: 0	A little help with a math problem.... Hallo can any of you do some math...:-) I have a problem I just can not solve, 1) I need to find a and b in the formula 2) find the direction and radius then Peter has "worked" 3 km arc line Peter must treasure hunt in the woods and have been told that he can find the treasure to closely follow the path of a logarithmic Spira, at a given starting point. If he walk 3 km, on the arc line. He will find the treasure. Peter knows a logarithmic spiral is as follows: Startpunkt=STARTPOINT He has also been told that when he has revolved around 180 degrees (marked with A in the figure), he is 86.23 meters from where he started, and after 360 degrees (marked with B in the figure), he is 75.41 meters where he started. Fortunately, Peter also knows the formula for a logarithmic spiral: , and he assumes that the starting point corresponds to Theta = zero. With this knowledge puts Peter down first and count (long) on the figures. Then he prepared for the trip, and he does not actually become dizzy by. Taygoo - Have tried to solve this in days now...:-) __________________ Last edited by Taygoo; 06-29-09 at 02:45 PM.