Question
Suppose you want to use cos (a-b) = cos a cos b + sin a sin b find the value of cos ( 11 12
Suppose you want to use cos (a-b) = cos a cos b + sin a sin b find the value of cos ( 11 12 ). Identify two angles and that could be used in this formula. You don't need to find the value of the cos ( 11 12 ); you only need to give the two angles and . List the two angles in radians as a reduced fraction.
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A Transition To Mathematics With Proofs
Authors: Michael J Cullinane
1st Edition
144962779X, 9781449627799
