a) 2- sqrt 3 b) 2- sqrt 3/ 2 c) 2+ sqrt 3/2 d) 2+ sqrt 3 I am not sure how to work this out and would appreciate you how to show me the process. Thank you in advanced!!!!!!!
cos pi/6 = .5 sqrt 3 cos -x = cos x so 1/4 - .5 sqrt 3 + 3/4 1 - .5 sqrt 3 (2 - sqrt 3 ) / 2
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