trigonometry: who can solve this? sin(2X)+3COS(2X)=1

[im alex]

who can solve this sin(2X)+3COS(2X)=1

 

[stapel]

who can solve this sin(2X)+3COS(2X)=1

Lots of people! But I suspect that you are the one who needs to solve this. Am I right?

What have you tried so far? Where are you getting stuck? Please be complete, so we can see where things are going sideways. For instance, you started with double-angle identities, and... then? Thank you!

 

[Deleted member 4993]

who can solve this sin(2X)+3COS(2X)=1

Hint:

divide both sides by √(1² + 3²)

 

[Steven G]

who can solve this sin(2X)+3COS(2X)=1

You should know that when sin(x) = 0 that cos(x) = +1 or -1 and visa versa

That should give some results. Are there others?