Why is my TI-84 giving different results for complex number calculations?

[1st1]

Hi,

I am having some difficulty understanding what is going on with the TI-84 complex number calculation in switching between rectangular and polar coordinates, hopefully someone can clarify this for me. For example, take the term 6<30 (6 angle 30). When I calculate this by hand going from polar to rectangular I get 5.196 + 3i. However, if I try to switch 6<30 into rectangular coordinates with my TI-84 I get 0.926 + 5.93i. Can anyone explain to me what is happening?

Thanks in advance!

 

[Gigasoft]

You have the calculator set to radians instead of degrees.

 

[1st1]

The calculator is set to degrees, not radians. I've checked.
However if I put the angle in as radians it does work.
Maybe it only works with radians even though I'm in degree mode.

 

[Integral]

rtfm

 

[1st1]

Ok, I figured it out thanks for the input.