Question

will fan and medal

sin(2x)cos(7x)=

1/2sin(9x) + 1/2sin(5x)
1/2sin(9x) - 1/2sin(5x)
1/2sin(5x) + 1/2sin(9x)
1/2sin(5x) - 1/2sin(9x)

Answer 1

sin(2x)cos(7x)

Answer 2

hmmm

Answer 3

a i think

Answer 4

i need a sure answer sorry

Answer 5

@Missiey

Answer 6

I think a to

Answer 7

alright imma check another site as well

Answer 8

I will to don't input it yet

Answer 9

im not

Answer 10

was i right

Answer 11

@Directrix If your on Help

Answer 12

@siahniya16

Answer 13

@Hero @satellite73

Answer 14

Here's a website to help you...
https://mathway.com/

Answer 15

i have tried that site trust me i knew about that site for like 2-3 years it isnt working on my questions

Answer 16

just go a bro

Answer 17

Did you write the question out correctly?

Answer 18

yes im sure of it

Answer 19

You can rewrite it to: \[sin(2x)cos(7x)=\frac{1}{2}(sin(9x)-sin(5x))\] That looks like one of your answers, if you multiply 1/2 inside the brackets, which one?

Answer 20

B.???

Answer 21

Correct :)

Answer 22

thanks @Tommynaiter can you help with the other 14

Answer 23

Try and post the question, maybe I can help :)