Chapter 04 Section 02 - Sections 4.2 4.3 Sum and Difference...

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Sections 4.2 – 4.3 Sum and Difference Identities Write cos( ) AB in terms of angles A and B . Show that cos( ) cos cos sin sin A B A B A B . Find the exact value of 7 cos 12    . Prove that cos sin 2 xx  .
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Use the cofuction identities to show that sin( ) sin cos cos sin A B A B A B . Show that   tan tan tan 1 tan tan AB  Sum and Difference Identites cos( ) cos cos sin sin cos( ) cos cos sin sin sin( ) sin cos cos sin sin( ) sin cos cos sin tan tan tan tan tan( ) tan( ) 1 tan tan 1 tan tan A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B   Find the exact values of: sin 12
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This note was uploaded on 05/15/2011 for the course MTH 122 taught by Professor Stone during the Fall '08 term at Grand Valley State University.

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Chapter 04 Section 02 - Sections 4.2 4.3 Sum and Difference...

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