An algebra problem by Ram Gautam

Algebra Level 3

z= 1- i

What is Arg(z) in degrees?


The answer is -45.

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Ram Gautam by Ram Gautam , 22, India

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1 solution

Ram Gautam
Oct 9, 2014

tan^{-1} |y/x| = tan^{-1} |-1/1| = -45

1 Helpful 0 Interesting 0 Brilliant 0 Confused

The complex number is in the 4th quadrant, to the argument is between − 90 -90 and 0.

Calvin Lin Staff - 6 years, 8 months ago

It cannot be - 45. The correct answer is either 45 or 135.

Tatikonda Ravi Kishore - 6 years, 7 months ago

It would be best if you specify the range of the angle in the problem (i.e. − 180 < x ≤ 180 -180<x≤180 ) to remove ambiguity.

Nick Turtle - 3 years, 5 months ago

Numerically 315 degrees is also correct as it lies in the 4th Quadrant

Saswata Dasgupta - 6 years, 4 months ago

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