The value of …{\cos}\left( {{3\pi \over 8}} \right)…{\sin ^3}\left( {{\pi \over 8}} \right)… is :

Option D. …{\cos}\left( {{3\pi \over 8}} \right)…{\sin ^3}\left( {{\pi \over 8}} \right)…

Trigonometric Ratio and Identites

JEE Main 2020 · 9 Jan, Morning shift · Q5652

MathematicsMedium45×since 2004Q5652

The value of

{\cos ^3}\left( {{\pi \over 8}} \right)

{\cos}\left( {{3\pi \over 8}} \right)

{\sin ^3}\left( {{\pi \over 8}} \right)

{\sin}\left( {{3\pi \over 8}} \right)

is :

JEE Main 2020 · 9 Jan, Morning shift · Q5652

MathematicsMedium45×since 2004Q5652

The value of

{\cos ^3}\left( {{\pi \over 8}} \right)

{\cos}\left( {{3\pi \over 8}} \right)

{\sin ^3}\left( {{\pi \over 8}} \right)

{\sin}\left( {{3\pi \over 8}} \right)

is :