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October 24th, 2013

10/24/2013

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5.1 Trigonometric Identities problems that involved using the Sine and Cosine Rules 
tt4_5.1_trig_identities_24-10-2013.pdf
File Size: 671 kb
File Type: pdf
Download File

HW - Exercise 5.1
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October 23rd, 2013

10/23/2013

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Today we covered the remaining 3 trigonometric proofs. 
tt4_5.1_trig_proofs_5-7_23-10-2013.pdf
File Size: 359 kb
File Type: pdf
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October 22nd, 2013

10/22/2013

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Today we did a test on the first 3 Trigonometric Identities. We then looked at the derivation of the 4th identity that cos(A-B) = cosA cosB + sinA sinB 
HW - Learn and practice this derivation (click here)
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October 21st, 2013

10/21/2013

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Today we answered Circle questions from Section 4.7 involving circles that had the x or y-axis as tangents (click here).

We then started Chapter 5: Trigonometry 2. There are 8 trigonometric identities that we are required to derive. Today we looked at the proofs of the first 3 of these including proofs of the Sine and Cosine Rules (click here).

HW: Learn these 3 derivations.

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Click for Revision Notes on the Circle
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Syllabus LCHL 2014
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October 18th, 2013

10/18/2013

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Solutions from class Section 2.6: Touching Circles (click here)
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October 16th, 2013

10/16/2013

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Today we looked at 2 sections:

Section 4.6 Touching circles considered the relationship between the radii and distance between the centres of 2 circles if they (i) touch externally or (ii) touch internally (click here).

Section 4.7 Circle touching axes considered what happens if a circle touches the x or y axes (click here).

HW: Questions from these sections. Since I am away tomorrow I hope that you will be able to continue with this work until Friday.
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Are you ready to take an interactive quiz?
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October 15th, 2013

10/15/2013

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Today we looked at Section 4.5 Common chords and tangents (click here).

HW: Questions from Section 4.5
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Requested Solution Section 4.3 Q.20

10/14/2013

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October 14th, 2013

10/14/2013

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Today we looked at the examples from Section 4.4 on Tangents (click here)

HW: Try questions from 4.4 

Requested solution to Q.16 (click here)
Video Example Similar to 4.4 Example 1 

Maths Week Senior Quiz - Monday 14 October

A man leaves €7936 in his will. He has a wife, three sons and four daughters. He has instructed that his daughters get three times as much as his sons and his sons get twice as much as his wife. How much does his wife receive?
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October 11th, 2013

10/11/2013

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Answered HW questions on Section 4.3 Equation of a Circle (click here).

Started Section 4.4 Tangents to a Circle (click here).

HW: Clinometer Experiment
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