Question

Hi! i need a help for my project. can anyone help me?? i want to know what is polar coordinate all about? Thankyou.

Answer 1

hi :)
umm you might want to check out this website first,
http://mathworld.wolfram.com/PolarCoordinates.html
then if you have any more questions you can ask :)
how does this sound? lol

Answer 2

The Unit Vector is always equal to 1 right??

Answer 3

In mathematics, a unit vector in a normed vector space is a vector (often a spatial vector) whose length is 1 (the unit length). A unit vector is often denoted by a lowercase letter with a "hat", like this: i-hat (pronounced "i-hat").

In Euclidean space, the dot product of two unit vectors is simply the cosine of the angle between them. This follows from the formula for the dot product, since the lengths are both 1.

The normalized vector or versor u-hat of a non-zero vector u is the unit vector codirectional with u, i.e.,

u-hat equals the vector u divided by its length

where ||u|| is the norm (or length) of u. The term normalized vector is sometimes used as a synonym for unit vector.

The elements of a basis are usually chosen to be unit vectors. Every vector in the space may be written as a linear combination of unit vectors. The most commonly encountered bases are Cartesian, polar, and spherical coordinates. Each uses different unit vectors according to the symmetry of the coordinate system. Since these systems are encountered in so many different contexts, it is not uncommon to encounter different naming conventions than those used here.

Answer 4

not my definition nor explanation, its form the web :)

Answer 5

thanks for the info. But is this part of Polar coordinate? I guess this is for Vector.

Answer 6

yeah its for the vector, that is the above info, but the link is for polar coordinates.
:)

Answer 7

ahm. thanks again but i need more info for polar coodinates. What about Slope of a tangent? when the equation of a graph is given in rectangular coordinates, you know that the tangent line has lopem=dy/dx. What are the two ways to find the slope of the tangent line to a graph of an equation in polar form. Thanks a lot :))

Answer 8

@Callisto
@Directrix
@jim_thompson5910

Answer 9

what is that?

Answer 10

oh you do that when you want to mention some other user for help.

Answer 11

Ow I get it. Can you help me to that question?

Answer 12

What about Slope of a tangent? when the equation of a graph is given in rectangular coordinates, you know that the tangent line has lopem=dy/dx. What are the two ways to find the slope of the tangent line to a graph of an equation in polar form. Thanks

Answer 13

http://www.emathhelp.net/notes?nid=483

Answer 14

thankyou @nitz

Answer 15

U ARE WELCOME...

Answer 16

can you give some example for this?