anonymous
  • anonymous
(sec(x)+tan(x))((1-sin(x))/cos(x))=1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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JoannaBlackwelder
  • JoannaBlackwelder
Use sinx/cosx=tanx
JoannaBlackwelder
  • JoannaBlackwelder
And secx=1/cosx
LynFran
  • LynFran
\[(\frac{ 1 }{ cosx }+\frac{ sinx }{ cosx })(\frac{ 1-sinx }{ cosx })=1\]\[(\frac{ 1+sinx }{ cosx })(\frac{ 1-sinx }{ cosx })=1\]\[\frac{ 1-\sin ^{2}x }{ \cos ^{2}x }=1\]...now use the Pythagorean identity to simplify

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anonymous
  • anonymous
i have already done that. now what
JoannaBlackwelder
  • JoannaBlackwelder
Solve the pythagorean identity for cos^2x and see what you get.
anonymous
  • anonymous
how do you use the Pythagorean identity for cos^2x
JoannaBlackwelder
  • JoannaBlackwelder
|dw:1441075116078:dw|
anonymous
  • anonymous
ok i get it thank you
anonymous
  • anonymous
thx to both of you
JoannaBlackwelder
  • JoannaBlackwelder
You're welcome :-)

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