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

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bradelyBest ResponseYou've already chosen the best response.0
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 9 months ago
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