Open study

is now brainly

With Brainly you can:

  • Get homework help from millions of students and moderators
  • Learn how to solve problems with step-by-step explanations
  • Share your knowledge and earn points by helping other students
  • Learn anywhere, anytime with the Brainly app!

A community for students.

write each polar equation in rectangular form: r=-3sec(Theta) r=costheta+sintheta r=5/3costheta+8sin

I got my questions answered at in under 10 minutes. Go to now for free help!
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.

Join Brainly to access

this expert answer


To see the expert answer you'll need to create a free account at Brainly

^theta after the last sin
You need to use these equations: \[r^2=x^2+y^2 ; rcos(\theta)=x ; rsin(\theta)=y \]
i did, but like it ended up like x^2+y^2= 25+9x^2r^2-30xr/64y^2 for the last one

Not the answer you are looking for?

Search for more explanations.

Ask your own question

Other answers:

We want the equations just in terms of x and y instead of r and theta.
i don't know what i did wrong
so the last one is: \[r=\frac{5}{3}\cos(\theta)+8\sin(\theta) \]?
no uh (5)/(3costheta+8sintheta)
oh so you meant 5/(3costheta)+8sin(theta)) and not 5/3cos(theta)+8sin(theta)
mhm 5 / (3cos+8sin)
\[r= \frac{5}{3\cos(\theta)+8\sin(\theta)}\] Multiply both sides by that one fraction's denominator
\[r(3\cos(\theta)+8\sin(\theta))=5 \] Distribute then substitute the equations I gave you
3xr+8ry=5 but then you'll need to put r on one side cause you would need to square it. and the answer comes out all weird
well rcos(theta) is x not just cos(theta same thing with the y deal rsin(theta) is y not just sin(theta)
whoops how about the secant one
put it in terms of cos by using an identity
then put it in some form where you can use the equations I gave you
sosoososososo it would be x^3+y^2x=-3 AND uh the other one x^2+y^2=x+y?
for the first one? no...
I haven't looked at the second one... You are making this way too hard it looks like.
first one you did this as first step right?: \[r=\frac{-3}{\cos(\theta)}\]
Notice this only has a cos in it... how do you get cos with the r over there so you can use the equation rcos(theta)=x
multiply both sides with r
try again
How do you undo multiplication?
Or division?
oh omg
we have division by cos to undo that you ?
so for that second one...
you actually got it right
but how did you go about it you didn't choose a complicated way right?
yep uh multiplied both side with r and then substituted the stuff in
oh good
do you have any other questions? do you think you got this better?
uh yea i have a few more
for standard forms of polar equation uh how would graph r=2cos3theta
Plug in values of theta and see what the r output is
then remember how you graph using polar coordinates r is the distance from the origin and direction is given by r to from the angle theta is the angle
like how would you do this with a graphing calculator
So for example if I plug in theta=0 \[r=2 \cos (3 \cdot 0)=2\cos(0)=2(1)=2 => \text{ graph the point } (2,0^o)\] |dw:1388269865874:dw|
find 0 degrees and then go to the circle with radius 2
cause wksht says not to use a table
|dw:1388269927627:dw| then plug in more points
oh i know how to graph but not without plugging in points
I haven't looked at a calculator in ages
did you try looking up how to input polar equations into whatever calculator type you have
some calculators require a difference procedure in order to do certain things
find mode and choose polar or pol or polargc
then just type your equation in
u what's the website
What ?

Not the answer you are looking for?

Search for more explanations.

Ask your own question