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thanks

 Jun 21, 2019
 #1
avatar+101813 
+2

    sec^2 x

_________________   =

(sec x + 1) (sec x - 1)

 

   sec^2 x

__________       [note   tan^2 x +  1  = sec^2x     ....so.....sec^2x - 1  = tan^2x  ]

   sec^2x- 1

 

sec^2 x

_______

tan^2 x

 

1 / cos^2 x

_____________

sin^2x / cos^2 x

 

[ 1 /cos^2 x ]  *  [ cos^2x  / sin^2 x  ]

 

   1

_____

sin ^2x

 

 

  1              1

___  *      ____

sinx         sin x

 

 

cscx  * cscx  =

 

csc^2 x

 

 

 

cool cool cool

 Jun 21, 2019
edited by CPhill  Jun 21, 2019

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