Math, asked by omm404486, 6 months ago

tan o = 11 then (Itsine) (1-sinoj
(1-COSA) CIt cose
60

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Answers

Answered by priyadarshinisoumya0

1

answer:

120

Step-by-step explanation:

given,

cosA=1/2

=>cosA=cos60°

=>A=60°

Hence,

cos2A=2×60=120°

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