Question

To solve the equation 3sin(2x) = 5cosx, you should rewrite it as____.

A. 3sinx + 5cosx = 0
B. cosx(3sinx - 5) = 0
C. cosx(6sinx - 5) = 0

Answer 1

hint: use eqn sin2A = 2sinAcosA

Answer 2

I am want say A but I have a good feeling it is C

Answer 3

What happens to the 2x if A is the ans?

Answer 4

Oh, now that I look at this way, I see that I don't see how 2x would go into A as the answer. Therefore taking that out of the equation right?

Answer 5

*problem

Answer 6

correct :)

Answer 7

Awesome! I don't think that B would be the answer because it would have to be '6sinx' instead of '3sinx' right?

Answer 8

also correct :)

Answer 9

Cool! So that would make the answer C!

Answer 10

Thank you for the time and help! I appreciate it!

Answer 11

welcome - u did most of the work urself! :)