Test SeriesFree PYQsExamsPricing

JEE Main Mathematics question

MathematicsComplex NumbersJEE Main

For an integer , let , where . The value of the expression is

Answer: 4

Solution

lies on the unit circle, and any two consecutive terms are separated by the angle , so . The numerator has

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-014176