Question

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Show all steps necessary to verify the trigonometric identity:

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

Answer 1

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

Answer 2

is that all? @AravindG

Answer 3

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

Answer 4

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?

Answer 5

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

Answer 6

thanks again! :)

Answer 7

yw :) minnie

Answer 8

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?

Answer 9

just substitute and then use distributive property add constants :)

Answer 10

are you getting it ?

Answer 11

ok yes thank you...again lol!

Answer 12

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

Answer 13

ok...

Answer 14

is there a way you can draw the problems out?

Answer 15

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