U.S. CitiesCity-Data Forum Index
Go Back   City-Data Forum > General Forums > Science and Technology
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
View detailed profile (Advanced) or search
site with Google Custom Search

Search Forums  (Advanced)
Reply Start New Thread
Old 02-01-2018, 04:15 AM
9,064 posts, read 9,221,268 times
Reputation: 4665


When I learned trigonometry in high school they used to emphasize the mnemonic SOHCAHTOA
sine is opposite over hypotenuse, cosine is adjacent over hypotenuse, tangent is opposite over adjacent

The ratio definitions are so fundamental in education that I find that many people can't correlate the trigonometry terms with the geometry terms tangent, secant, arc, and complementary.
Reply With Quote Quick reply to this message

Old 02-11-2018, 10:42 PM
Location: City of the Angels
2,223 posts, read 1,522,135 times
Reputation: 5363
This brings back a lot of memories.
Back in the 70's I worked in a shipyard doing lay out aboard the ship and the first thing my lead man gave me was a Illinois Tool Works Trigonometry Tables pocket sized book that I kept in my back pocket that had all the formulas for solving degrees and angles for different triangles.
It made solving complex degree layouts so simple.

I still remember doing the layout for the anchor chain hawse pipe that went forward, outboard, and downward from the main deck through 2 decks and then penetrating the hull using trig to lay it out.

Last edited by NickofDiamonds; 02-11-2018 at 11:00 PM..
Reply With Quote Quick reply to this message
Old 02-27-2018, 11:40 AM
5 posts, read 1,350 times
Reputation: 10
Is it required? I'd say it depends on your level of math skill. Geometry was a prerequisite for Aglebra2/trig when I was in highschool. I don't think I would've had any trouble in trig had I skipped geometry. Heck, I did skip geometry a lot back then. Still aced it, but then again math was always very easy for me. So no, I don't it's necessarily needed beforehand, but I do think it would be beneficial for some prior to taking trig.
Reply With Quote Quick reply to this message
Old 03-01-2018, 07:51 AM
Location: Upstate NY
30,405 posts, read 9,086,867 times
Reputation: 28945
Originally Posted by Debsi View Post
My high school track in the 90's was Algebra-Geometry-Trigonometry-Calculus. Unfortunately, I'm a dunce at Geometry. I loved Algebra.

I recently considered whether I should get second bachelor's degree in Computer Science and the 6+ higher mathematics classes in the track cooled my jets considerably.

Yours was the same as mine--in the '60s
Reply With Quote Quick reply to this message
Old 03-06-2018, 06:34 AM
Location: Maryland
805 posts, read 237,501 times
Reputation: 1859
It's odd, trigonometry and geometry were easy for me, I enjoyed them. They made an intuitive kind of sense to me because I could see the things and manipulate them in my mind. I hated algebra, etc. because it was so abstract....I couldn't see anything.
Reply With Quote Quick reply to this message
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.

Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.

Please update this thread with any new information or opinions. This open thread is still read by thousands of people, so we encourage all additional points of view.

Quick Reply

Over $104,000 in prizes was already given out to active posters on our forum and additional giveaways are planned!

Go Back   City-Data Forum > General Forums > Science and Technology
Follow City-Data.com founder on our Forum or

All times are GMT -6.

2005-2018, Advameg, Inc.

City-Data.com - Archive 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35 - Top