 Welcome to the session. Let us discuss the following question. The question says prove that integral of square root of 1 minus sine 2x from 0 to pi by 4 is equal to root 2 minus 1. We begin with the solution. In this question, we have to prove that integral of square root of 1 minus sine 2x from 0 to pi by 4 is equal to square root of 2 minus 1. We know that cos square x plus sine square x is equal to 1. And sine 2x is equal to, so by using this, we can write.