- #1

- 187

- 0

no clue how to start this:

show

sin 3x = 3 sin x - 4 sin^3 x

show

sin 3x = 3 sin x - 4 sin^3 x

- Thread starter thenewbosco
- Start date

- #1

- 187

- 0

no clue how to start this:

show

sin 3x = 3 sin x - 4 sin^3 x

show

sin 3x = 3 sin x - 4 sin^3 x

- #2

- 18

- 0

How to start this: sin(3x) = sin(2x+x)

- #3

- 187

- 0

right so after doing this i get

sin 3x = sin2x(cos x) + (cos2x)(sin x)

whats next

sin 3x = sin2x(cos x) + (cos2x)(sin x)

whats next

- #4

- 18

- 0

sin(2x)=...?

cos(2x)=...?

cos(2x)=...?

- #5

- 187

- 0

thanks for the help i got this and the others

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