The Sydenham High School Mathematics Department Blog » Trigonometry

Mr Brewin’s Year 9 – Sine and Cosine Rules

Mr Brewin — Wed, 10 Mar 2010 10:34:09 +0000

Here’s the boards from the lesson today which may help with the questions on the homework:

Ex 22.2 qu 1 (a, c, e)
Ex 22.3 qu 1 (a, c, e) and 2

In for Monday!

Mr Brewin’s Y13 – H/W Worked Solutions

Mr Brewin — Tue, 10 Nov 2009 15:11:31 +0000

The trig questions are here.

The functions questions are here.

Hope that helps!

Protected: Mr Brewin’s Y13 C3 Trig…

Mr Brewin — Wed, 04 Nov 2009 09:57:53 +0000

Addition Rule Trig for Year 13 A-Level

Mr Williams — Sun, 28 Sep 2008 18:08:05 +0000

Hiya.

Here are those details about addition formulae that you were after.

This first page uses a demo that you’ll need to download. Its free. The areas of the grey squares and rectangles match up giving the identity for sin(A+B)

Webpage 1

This second one uses a different proof but it is just as lovely. It comes from the circle theorems – just look out for the right angled triangles inside the circle.

Webpage 2

This third one is just like the proof I went thro in the lesson.

Web page 3

Hope that they help.

Mr Williams

Mr Williams Year 13 lesson on trig graphs.

Mr Williams — Fri, 19 Sep 2008 15:49:36 +0000

Here are the notes from the lesson.

year-13-lesson-on-trig-functions-19th-sept-2008

When producing a graph of say, y = cosec x remember that this is the same as y = 1/(sin x). Use what you know about sin x to help you produce the graph of y = cosec x.

Hope you like the graphs!

Mr Brewin’s Y11 – Transforming Graphs

2007-8 Blog — Wed, 30 Apr 2008 09:04:16 +0000

Here’s the link to the original post from the lesson on Transforming Trig Functions.

A powerpoint on transforming general functions and curve-sketching (taken from C1 AS work, but still relevant) is here; another one to look through for revision is this one on functions and graphs too.

Mr Brewin’s Y11 – Solution to Trig Questions

2007-8 Blog — Fri, 18 Apr 2008 15:06:53 +0000

Here’s the link to the slides from today’s lesson going over the Trig exam questions.

And the experiment typography piece I mentioned is can be seen here. There’s a neat time-lapse video piece of it here and a brief outline of how it was done here too. Unfortunately, it’s in California (like we get enough sun here for it to even nearly work /-) )

Vectors questions for Tues, and have a think about if you want/need a revison class.

Have a good w/e.

Mr Brewin’s Y12 – Trig Identities

2007-8 Blog — Fri, 11 Apr 2008 11:28:41 +0000

It would be great if Talia and Marnie could have a read through of the slides on this before the next lesson. We’ll have another run through of the theory quickly then, and do some examples. Next lesson: Tuesday after school.

See you then!

Mr Brewin’s Y12 – Trig Functions

2007-8 Blog — Thu, 10 Apr 2008 13:47:59 +0000

The slides from C2 Chapter 8 are here.

Trouble-shoot questions from Chapter 8, plus some exam qus tomorrow… we’re getting there!

Mr Riedel’s Year 12 Core class – Transformation of Trig functions

2007-8 Blog — Mon, 17 Mar 2008 12:54:40 +0000

Click here to see the notes from our lesson.

Homework is from Exercise 8G on page 125, question 1, 2, 3, 5 and 6.