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April 21, 2014

April 21, 2014

Posted by **meme** on Sunday, February 19, 2012 at 11:53am.

(a) (4,6)

(b) (-3.7)

(c) (10,-23)

- math -
**Reiny**, Sunday, February 19, 2012 at 12:04pmI will do a), you do the rest

for (4,6), r^2= 4^2+ 6^2 = 52

r= √52

tanØ= 6/4

Ø = appr 56.3°

so (4,6) ---> (√52cos56.3 , √52sin56.3)

= appr (7.2cos56° , 7.2sin56°)

- math -
**meme**, Sunday, February 19, 2012 at 12:09pmAR U SURE ?

- math -
**Reiny**, Sunday, February 19, 2012 at 1:49pmDid you want the ordered pair (4,6) expressed in polar form?

I was wondering why you asked for the form

(rcosØ, rsinØ) since that is simply the equivalent of (x,y)

e.g. my answer of (7.2cos56 , 7.2sin56) = (4.026 , 5.969) or (4,6)

if you want it in the polar form (r, Ø)

then (4,6) ---> (7.2 , 56°)

however, that is not what you had asked for.

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