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jaersyn
 3 years ago
sketch the polar equation
r = 4sin(t)
jaersyn
 3 years ago
sketch the polar equation r = 4sin(t)

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Mathmuse
 3 years ago
Best ResponseYou've already chosen the best response.0Start with your critical points. 0, pi/2, pi, 3pi/2, 2pi you should be familiar with the values of sin(t) at these points. multiply by 4 and plot the points, connect the point to obtain a rough sketch

jaersyn
 3 years ago
Best ResponseYou've already chosen the best response.0don't i have to find the rectangular equation for this first?

Mathmuse
 3 years ago
Best ResponseYou've already chosen the best response.0you can plot it in rectangular coordinates...but since the radius is given in terms of an angle, you can plot it directly to a polar plot

jaersyn
 3 years ago
Best ResponseYou've already chosen the best response.0True, can you help me graph it using rectangular coordinates? Haven't gotten around using polor coordinates yet

phi
 3 years ago
Best ResponseYou've already chosen the best response.1you could write your rectangular equation as \[x^2 + y^2 +4y =0 \] now complete the square on y

phi
 3 years ago
Best ResponseYou've already chosen the best response.1although I am not sure where your r= 4 sin \(\theta\) came from Up top, it is r= +4 sin \(\theta\)
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