c10s4 - 10.4 Polar Coordinates The polar coordinate system...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
10.4 Polar Coordinates The polar coordinate system can be more convenient in many areas of application. Look at Figure 1 on page 660. Polar coordinates are given as . Points in a polar system do not have unique values. ( , Pr θ = ) Example: Plot the polar points () ( ) ( 5 2, , , , 2 , , 3, , 2,0 , 1,0 , 0,2 , 0, 2 44 63 ππ π    −− − −       ) We can use right triangle trigonometric ratios to convert from polar to rectangular and from rectangular to polar. 22 cos cos sin sin tan x xr r y yr r y rxy x θθ =⇒= =⇒ = == 2 + () ( ,, P x y ) x y r Example: Convert from polar to rectangular . 2sin r = Example: Convert from rectangular to polar . 1 xy −= Polar Graphs Your calculator will draw graphs in polar mode. You can use either degree or radian mode. When you are in polar mode, you must use a θ -step that is appropriate for degree or radian. For degree mode a step of 5 will work ok. For radian, use 0.06. You can also select either rectangular coordinates or polar coordinate for you graph trace.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

c10s4 - 10.4 Polar Coordinates The polar coordinate system...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online