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Old 10-03-2007   #1
andrew p
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Default I need help with trigonometry identities.?

How do i show that sq root 3 cos x-sin x can be written as 2 cos(x+30) and the max and min values of the expression and the values x between 0 and 360 degrees?i can generally get that far but how do i get th max and min values?
 
 

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