***Medal AND Fan Rewarded***
Show all steps necessary to verify the trigonometric identity:

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

Question

***Medal AND Fan Rewarded***
Show all steps necessary to verify the trigonometric identity:

1 - 2cos^2x = 2sin^2x - 1

aravindg · Answer

replace cos^2 x with 1-sin^2 x in left hand side of equation

anonymous · Answer

is that all? @AravindG

aravindg · Answer

yep then just open it up you will get the result !

anonymous · Answer

Thanks so much for your help! :) Will that work for this problem as well.... 1+tan^2x/tan^2x=csc^2x? or is it a diff. method?

aravindg · Answer

well 1+tan^2 x =sec^2 x ,just do sec^2 x/tan^2 x :)

anonymous · Answer

thanks again! :)

aravindg · Answer

yw :) minnie

anonymous · Answer

In the top problem when replacing cos^2 x with 1-sin^2 x on the left hand side do i multiply it and that gets rid of it or what? how do i get rid o it?

aravindg · Answer

just substitute and then use distributive property add constants :)

aravindg · Answer

are you getting it ?

anonymous · Answer

ok yes thank you...again lol!

aravindg · Answer

yw :) ...lemme knw if you have doubts on such proofs again its my fav topic !

anonymous · Answer

ok...

anonymous · Answer

is there a way you can draw the problems out?

aravindg · Answer

yep use draw button below ..you can also use equation button