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Welcome to the grade 12 precalculus math blog of St.James Collegiate....

Monday, April 4, 2011

April 4, 2011

Sum and Difference Identities

Period 1: Todays lesson was about using the basic difference and sum identities to verify and simplify trigonometric expressions.


Video Tutorial on Sum and Difference Identities
This video explains how to use the sum and difference identities to find the exact value on the unit circle.




This tutorial shows how to do an exam type question





Period 6: It was a work period to finish the review booklets (blue and yellow) and to also, work on Ex. 16 and 17.

Ex. 16 # 4, 7, 8bc, 9b, 10-15
Ex. 17 # 5, 6, 7

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