pierresagop47ucu pierresagop47ucu

27-02-2020
Mathematics

contestada

prove
cos(^2)x-sin(^2)x=1-2sin(^2)x

Respuesta :

surjithayer10 surjithayer10

03-03-2020

Answer:

Step-by-step explanation:

[tex]cos^2x-sin^2x=1\\\\cos^2x+sin^2x=1\\\\so~cos^2x=1-sin^2x\\cos^2x-sin^2x=1-sin^2x-sin^2x=1-2sin^2x[/tex]

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