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yanalaym [24]
3 years ago
5

What is the numerical solution of sec^2(-pi/4)?

Mathematics
1 answer:
Kazeer [188]3 years ago
7 0
Sec²(-π/4)

sec x= 1/ cos x
cos(-π/4)=cos(π/4)  as even function
cos(π/4) = (√2)/2
sec(-π/4) =1/(cos(-π/4))=1/cos(π/4)= 2/(√2)

sec²(-π/4)=( 2/(√2))²= 4/2=2

sec²(-π/4) = 2

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