siyarammahato94 siyarammahato94

18-08-2021
Advanced Placement (AP)

contestada

if sinA=3/5 find the value of cos2A
help meeeeee

Respuesta :

maheshbhandari maheshbhandari

18-08-2021

Answer:

7/25

Explanation:

cos2A=1-2sin^2A

or, Cos2A=1-2.(3/5)^2

or, Cos2A=1-2(9/25)

or, Cos2A=1-(18/25)

or, Cos2A=(25-18)/25

or, Cos2A=7/25

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