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

convert each point,P(x,y)to the ordered pair P(r cos theta ,r sin theta).round all valuas of r to one dicimal place and all values of theta to the nearste degree.

(a) (4,6)

(b) (-3.7)

(c) (10,-23)

- math -
**Reiny**, Sunday, February 19, 2012 at 12:04pm
I 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 12:09pm
AR U SURE ?

- math -
**Reiny**, Sunday, February 19, 2012 at 1:49pm
Did 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.

## Answer This Question

## Related Questions

- Calculus - I wanted to confirm that I solved these problems correctly (we had to...
- Algebra II - Multiple Choice Which expression is NOT equivalent to 1? (theta) ...
- Trigonometry - Prove the following identities: 1. (tan theta - sin theta)^2 + (1...
- Trigonometry - Prove the following identities: 1. (tan theta - sin theta)^2 + (1...
- trigonometry - can you correct the rest for me please? Express each as a ...
- trigonometry - can you correct the rest for me please? Express each as a ...
- trigonomtry - can you correct the rest for me please? Express each as a function...
- trig - i nead to find to the nearest degree all values of theta in the interval ...
- Trig - Which expression equivalent to: cos(theta + pi/2). A)cos theta B)-cos ...
- Algebra II - Which of the following expressions are not equal to 1? A) sin^2 ...

More Related Questions