anonymous
  • anonymous
Proof: Secx-sinxtanx
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
rewrite in terms of sin and cos, factor out cos, use sin^2+cos^2=1 to replace 1-sin^2 with cos^2, reduce, and you have cosx
anonymous
  • anonymous
My bad it should say Secx-sinxtanx=cosx
anonymous
  • anonymous
I have to prove it using the identities

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anonymous
  • anonymous
(1/cos)-(sin^2/cos) = 1/cos(1-sin^2) = 1/cos(cos^2) = cos

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