Monday, April 6, 2009

BOB for identities..

One more unit is done... so i just go straight forward ...

In this unit, most we do are about sine and cosine.


from that equation, we can easily get these implies by dividing both side by or

and we get :


then we studied about the sum and difference identities

since we got that, we'd know the expression for sin2x , cos2x, and tan2x

I don't think i got any problem with this unit and all thing below i think are the main idea of this unit.

Pre-test is tomorrow, Tue, April 7
Test is on Thu, April 9.

Good luck all ..


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