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)

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.

Solutions from class Section 2.6: Touching Circles (click here)

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.

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

HW: Questions from Section 4.5

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)

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