0 votes 0 votes The value of the series $1+\sin x+\cos ^{2} x+\sin ^{3} x+\cdots$ at $x=\frac{\pi}{4}$ is $\_\_\_\_\_\_\_$. $\frac{1}{\sqrt{2}+1}$ $\frac{\sqrt{2}}{\sqrt{2}+1}$ $\frac{1}{\sqrt{2}-1}$ $\frac{\sqrt{2}}{\sqrt{2}-1}$ Others gatebt-2024 + – admin asked Mar 25 • edited Mar 27 by makhdoom ghaya admin 2.7k points answer comment Share Follow See all 0 reply Please log in or register to add a comment.