1961 IMO Problems/Problem 3

Problem

Solve the equation

$\cos^n{x} - \sin^n{x} = 1$

where $n$ is a given positive integer.

This problem needs a solution. If you have a solution for it, please help us out by adding it.

1961 IMO (Problems) • Resources
Preceded by Problem 2	1 • 2 • 3 • 4 • 5 • 6	Followed by Problem 4
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