anonymous
  • anonymous
Find sin (x+y), assuming that sin x= -2/3, cos y=1/4 and both x and y are in quadrant IV.
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
sin(x+y)=sinxcosy+cosysinx
anonymous
  • anonymous
are you familiar with this identity?
anonymous
  • anonymous
no

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
i have to look at my notes
anonymous
  • anonymous
do you know how to find cos(x) if you are given sin(x)? because you need that too.
anonymous
  • anonymous
sin x=1/cos x
anonymous
  • anonymous
This is incorrect I think you are mistaking it with sec(x)=1/cos (x)
anonymous
  • anonymous
oh, you're right
anonymous
  • anonymous
Okay, so we know this identity sin(x+y)=sin(x)cos(y)+cos(y)sin(x) now we have to plug in what we know
anonymous
  • anonymous
You know sin(x),cos(y) you don't know sin(y),cos(x)
anonymous
  • anonymous
i have no idea what to do
anonymous
  • anonymous
So you need to find what you don't know are you familiar with soh-cah-toa
anonymous
  • anonymous
a bit, but I don't even know how you got sin (x+y)=sin (x)cos(y)+cos(y)sin(x)
anonymous
  • anonymous
this is identity, you just need to know that
anonymous
  • anonymous
ok, I see it in my notes under cosine of a sum or difference

Looking for something else?

Not the answer you are looking for? Search for more explanations.