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 one year ago
It is given that A is an obtuse angle and cosA=sqrt5/3.Without using calculator,find the value of cos 3A
 one year ago
It is given that A is an obtuse angle and cosA=sqrt5/3.Without using calculator,find the value of cos 3A

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bradely
 one year ago
Best ResponseYou've already chosen the best response.0step by step answers posted here http://www.mathskey.com/question2answer/4128/itisgiventhataisanobtuseangleandcosasqrt53 ask your trigonometric homework questions at http://www.mathskey.com/question2answer/… and get free math help. all the best
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