nabarajbo8 nabarajbo8

18-08-2021
Mathematics

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please solve this
please please

please solve thisplease please class=

Respuesta :

chummybob566 chummybob566

18-08-2021

Answer:

Cos2A=11/25

2cos^2 A-1=11/25

2Cos^2A=1+(11/25)=36/25

Taking square root on both sides,we get

√2COSA=6/5(if A lies in first or fourth quadrant)

CosA=6/5*√2

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