Question

simplify this expression
sec(x)cot(x)sin(2x)

Answer 1

are we trying to show this equals something else?

Answer 2

nope, just trying to simplify it using identities

Answer 3

Instead of sec(x) you can write 1/cos(x).
Instead of cot(x), write cos(x)/sin(x).
Instead of sin(2x), write 2*sin(x)*cos(x). Cancel like terms and out pops a clean new expression, that you will like. :)

Answer 4

2cosx!

Answer 5

thats not factorial by the way its an exclamation point

Answer 6

oh thanks!
i've got more too haha

Answer 7

sin(2x)cos(5x) + cos(2x)sin(5x)

Answer 8

oh mine thats shat sin(2x+5x)

Answer 9

sin(7x)

Answer 10

remember sin(x+y)=sinxcosy+sinycosx correct?

Answer 11

oh, yes! i forgot that identity since it didn't look that way to begin with.

Answer 12

where do i go once it's expanded?