Question

prove 2sin^2A+cos^4A=1+sin^4A

Answer 1

Given :

$2sin^2A+cos^4A$

We know that : $cos^2A=1-sin^2A$

$\implies 2sin^2A+(1-sin^2A)^2$

Expanding the square

$\implies 2sin^2A+1+sin^4A-2sin^2A$

$\implies sin^4A+1$ .......... [P.R.O.V.E.D]

Hope it helps :-)

_______________________________________________________________

Answer 2

Refer to the attachment above.




Hope this will help you. 

If you like my answer
Please mark it as brainliest 
And 
Be my follower if possible.

Answer 3

Refer to the attachment above.




Hope this will help you. 

If you like my answer
Please mark it as brainliest 
And 
Be my follower if possible.