Find all positive integer n such that sinnθsinθ−cosnθcosθ=n−1holds for all θ which are not integral multiples of π2
Problem
Source: Indian Postals 2015 Set 5
Tags: trigonometry, inequalities, number theory, calculus, integration, function
Source: Indian Postals 2015 Set 5
Tags: trigonometry, inequalities, number theory, calculus, integration, function
Find all positive integer n such that sinnθsinθ−cosnθcosθ=n−1holds for all θ which are not integral multiples of π2