The exercise is:

write the expression in polar form:

Here is my work:

that is

and that becomes:

and then

anyway the correct answer is -1 I get the absolute value wrong can anyone spot my error.?

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- May 20th 2010, 04:12 AMHenryt999Simplifying an expression involving complex numbers.
The exercise is:

write the expression in polar form:

Here is my work:

that is

and that becomes:

and then

anyway the correct answer is -1 I get the absolute value wrong can anyone spot my error.? - May 20th 2010, 04:25 AMHallsofIvy
Here's your error. has argument or , not or .

The right triangle formed by the lines from (0, 0) to , (0, 0) to , and from to is half of an equilateral triangle. It vertex angle is 30 degrees or radians.

Quote:

anyway the correct answer is -1 I get the absolute value wrong can anyone spot my error.?

- May 20th 2010, 04:31 AMmr fantastic