The value of the expression `2^199 sin (pi/199)sin((2pi)/199)sin((3pi)/199)………..sin((198pi)/199))=`

sin((pi)/(10))sin((3pi)/(10))=?

Value of expression sin ((pi) / (9)) + sin ((2 pi) / (9)) + sin ((3 pi) / (9)) + ... + sin ((17 pi) / ( 9)) =

The value of sin (pi/14). sin((3pi)/14). sin( (5pi)/14)………. Sin ((13pi)/14) is

sin (pi/2) = 2 sin(pi/4) cos (pi/4)

Evaluate the following expression : sin^(2).(pi)/(12)+sin^(2).(3pi)/(12)+sin^(2).(5pi)/(12).

Value of the expression 2[sin^(8)[(pi)/(16)]+sin^(8)[(3 pi)/(16)]+sin^(8)[(5 pi)/(16)] + sin^(8)[(7 pi)/(16)]]

The value of sin ""(pi)/(16) sin ""(3pi)/(16) sin ""(5pi)/(16) sin ""(7pi)/(16) is

Value of expression sin^(2)(pi)/(6)+cos^(2)(pi)/(4)-sec(pi)/(3) is