cos^2 - sin^2X
------over------
1 - tan^2 X

Question

cos^2 - sin^2X
------over------
1 - tan^2 X

nnesha · Answer

$$\huge\rm \frac{ \cos^2 x- \sin^2x }{ 1-\tan^2x}$$

anonymous · Answer

is cos^2X the answer

nnesha · Answer

can you please tell me how u got cos^2x :=)
thanks!

anonymous · Answer

do i have to

nnesha · Answer

hmm 
just wanted some explanation 
you can explain in words like what ws ur first step

anonymous · Answer

cos^2 x - sin^2 x        cos^2 x -sin^2 x          cos^2 x - sin^2 x
--------------------   =     ---------------------   =    ----------------------
 1 - tan^2                     cos^2 x  sin^2 x         cos^2 x - sin^2 x
                                     --------  -  ---------        -----------------------
                                       cos^2    cos^2          cos^2 x

    cos^2 - x - sin^2            cos^2 x 
= ------------------------- x   --------------          = cos^2 x
               1                           cos^2 -sin^2 x

nnesha · Answer

PERFECT!

anonymous · Answer

thanks

nnesha · Answer

thanks for showing ur work
 and you can use equation tool  
great job!

anonymous · Answer

yea i'm new so i don't really know how to use this yet

nnesha · Answer

yeh i  understand 
let me know if you have any question abt equation tool i can help :=)

nnesha · Answer

or about latex

anonymous · Answer

ok thanks

nnesha · Answer

np :=)