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solve for cos^2x=secx

note: cos square root of 2 x.
6 years ago

Answers

Reiny
cos^2x means cosx squared, or (cosx)^2 , not square root or √cosx !

I will assume you meant (cosx)^2

cos^2 x=secx
cos^2 x= 1/cosx
cos^3 x = 1
cosx = 1
from the graph, we know cos 0 = 1, cos 2π = 1
so x = 0, 2π
6 years ago

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