Jee Main
Trigonometric Ratio And Identites
JEE Main 2023 (Online) 8th April Evening Shift
MCQ+4 / -12023
The value of \(36\left(4 \cos ^{2} 9^{\circ}-1\right)\left(4 \cos ^{2} 27^{\circ}-1\right)\left(4 \cos ^{2} 81^{\circ}-1\right)\left(4 \cos ^{2} 243^{\circ}-1\right)\) is :