Computer Forums Math/Trig problem
 Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

 02-13-2010, 11:22 PM #1 Site Team     Join Date: May 2006 Posts: 7,903 Math/Trig problem Ok, picture is below. This is for a building my dad is working on. There is a curved wall, and a straight wall that is tangent to the curved wall. The radius of the curved wall is 294' and the length of the tangent wall is 108'. I drew in a vertical line to make it into a triangle to help visualize in the picture. What we need are the vertical lengths from the horizontal line to the circle, every 4 feet. Any idea how to calculate it? __________________ __________________ “Adults are just obsolete children and the hell with them.” - Dr. Suess
 02-14-2010, 01:06 AM #2 Daemon Poster     Join Date: Dec 2008 Posts: 781 Re: Math/Trig problem what do you exactly mean? you can just technically measure it on the x axis and make notches every 4'. then make a corresponding notch above them on the circular wall __________________ __________________ OCZ 550 Watt Modular|Intel E7300 Core 2 Duo @ 2.66ghz|Gigabyte EP45UD3R|4 GB Corsair 800 DDR2|Geforce 8800 GTX|Seagate 250GB 7200RPM SATA|Samsung 160GB 7200RPM SATA|120 GB External WD Passport HD|Microsoft 3 Button Optical Mouse|Lite-On 2 Tone Standard Keyboard|ViewSonic 22in Wide Screen|Logitec x-540|Windows 7 Ultimate 64 bit
 02-14-2010, 09:50 AM #3 Guru     Join Date: Jan 2008 Location: U.S. Posts: 7,841 Re: Math/Trig problem I suggest you first scale this down using the highest common factor. Next, you translate a circle (using the formula x^2 + y^2 = r^2) with the scale radius so the left most point is touching the y-axis and the bottom-most point is touch the x-axis. You let the horizontal line be the x-axis. Plug all this into a TI-83 and use the table function for every 4 points on the x-axis. It should give you a corresponding length on the y value.
 02-15-2010, 03:47 PM #4 Site Team     Join Date: May 2006 Posts: 7,903 Re: Math/Trig problem Ahh, good call, forgot about that formula. Plug it into a "for loop" in Matlab, and have all the answers in no time, lol __________________ “Adults are just obsolete children and the hell with them.” - Dr. Suess
 02-15-2010, 04:14 PM #5 Guru     Join Date: Jan 2008 Location: U.S. Posts: 7,841 Re: Math/Trig problem I just got MATLAB installed on my computer at home. Makes Diff.E. soooooooo much easier.
 02-15-2010, 04:17 PM #6 Site Team     Join Date: May 2006 Posts: 7,903 Re: Math/Trig problem Yeah, we use it in our engineering fundamentals class, it's a really nice program. I can see some good use to it when I get into higher level maths I think. __________________ “Adults are just obsolete children and the hell with them.” - Dr. Suess
 02-15-2010, 04:35 PM #7 ~~~~~~~~   Join Date: Jan 2005 Location: Wales Posts: 5,556 Re: Math/Trig problem I too have aquired Matlab. __________________