## Tutorial – SOH CAH TOA

Jun 11

Geometry and Trigonometry SOHCAHTOA 3 Comments

I’m back!! Thanks for your patience while I was madly busy for the last month doing this rather time consuming thing called finishing my masters degree. The good news is, I’ve now finished. Yay me! I’ve mastered business. So now I can get on with important things like creating maths tutorial videos for you all.

So it’s time to move on from the Core (Data Analysis) topic and start giving you some help on the modules. Unfortunately, there are 6 possible modules to choose from, and each student will only be studying 3 of them. Which means the rest of the videos I make will be useful to some, but not all, further maths students.

One last statistics question for you… Below is a table of data concerning the number of students who chose each module over the last 9 years. I’m going to use these statistics, as well as the results from the poll I’ve been running on this website, to determine which order I cover the modules in.

Some practice for data analysis (BONUS POINTS… well, kudos anyway.. to the first student to answer these two questions in the comments!)

a) What percentage would you expect each row to sum to? Why?

b) What would be a possible reason some rows *do not* sum to this number?

Year | No Students | Number patterns | Geometry and trigonometry | Graphs and relations | Business-related mathematics | Networks and decision mathematics | Matrices | Total |

2010 | 27,677 | 33% | 78% | 45% | 42% | 44% | 59% | 301 |

2009 | 26,206 | 37% | 85% | 49% | 46% | 46% | 48% | 311 |

2008 | 25,746 | 37% | 86% | 49% | 48% | 43% | 36% | 299 |

2007 | 25,644 | 42% | 84% | 52% | 54% | 41% | 30% | 303 |

2006 | 23,993 | 40% | 81% | 49% | 54% | 42% | 14% | 280 |

2005 | 21,815 | 49% | 91% | 53% | 64% | 41% | n/a | 298 |

2004 | 21,173 | 47% | 90% | 52% | 68% | 43% | n/a | 300 |

2003 | 24,327 | 51% | 90% | 50% | 69% | 41% | n/a | 300 |

2002 | 20,402 | 49% | 83% | 49% | 66% | 40% | n/a | 286 |

So.. as you can see from this table, it looks like historically “Geometry and Trigonometry” is studied by the most students. My online poll seems to suggest that of the sample I have (all further maths students in Victoria would be my population, further maths students who’ve visited this website is my sample), that most of you are studying Geom and Trig too. So though I’m going to annoy roughly 15-20% of you by doing so, I’m going to cover that module first.

Voila -- we start with SOH CAH TOA (the trigonometric ratios). Enjoy!

*Update (17 June): Because I clearly wasn’t awake the day I posted this video, the title page said it was a Data Analysis tutorial. In case it’s not obvious… it’s not a data analysis tutorial, its for Module 2: Geometry and Trigonometry. I’ve changed the title page now and this is the *new* video…*

AZRA

Mar 05, 2013@ 09:16:15Hi Shanon

Can you please let me know if you still do one on one Further Maths tuition and lower high school grades.

Your videos are impressive and amazing.

Thank you

Kind regards

Azra

Shannon

Mar 07, 2013@ 21:52:52Hi Azra

No, not this year unfortunately. My full time job has made it too tricky to take on private students. Let me know if there is anything specific you’d like help with though and I’ll see if I can assist

Cheers

nirmal

Nov 04, 2012@ 17:16:52thanks