Question

Picture attached (Trig things)

Answer 1

I got 2sinxcosx + 1

Answer 2

@uri

Answer 3

sin2x + cos2x
2sinxcosx + cosxcosx + sinxsinx
2sinxcosx + cos^2x + sin^2x
2sinxcosx + 1
Not an answer choice...

Answer 4

I mean
sin2x - cos2x
2sinxcosx -( cosxcosx + sinxsinx )
2sinxcosx -( cos^2x + sin^2x )
2sinxcosx - 1

Answer 5

`
\(\Large \cos2x = \cos^2x -\sin^2 x =1-2\sin^2x \)

Answer 6

sin2x - cos2x
2sinxcosx - 1 + 2sin^2(x)

Answer 7

Thanks!

Answer 8

welcome ^_^