`sin^2(51^@-x)+sin^2(39^@+x)`

The value of sin^(2)51^(@)+sin^(2)39^(@) is

If cosec39^(@)=x , then the value of (1)/(cosec^(2)51^(@))+sin^(2)39^(@)+tan^(2)51^(@)-(1)/(sin^(2)51^(@)sec^(2)39^(@)) is.

If cosec 39^@ = x , the value of (1)/(cosec^2 51^@) + sin^2 39^@ + tan^2 51^@ - (1)/(sin^2 51^@ sec^2 39^@) is____

Value of (2sin9^(@)sin 21^(@)sin 39^(@)sin 51^(@)cos21^(@)sin 81^(@))/(sin54^(@)) is equal to:-

Value of (2sin9^(@)sin 21^(@)sin 39^(@)sin 51^(@)cos21^(@)sin 81^(@))/(sin54^(@)) is equal to:-

(4sin9^(@)sin21^(@)sin39^(@)sin51^(@)sin69^(@)sin81^(@))/(sin54^(@))

(4sin9^(@)sin21^(@)sin39^(@)sin51^(@)sin69^(@)sin81^(@))/(sin54^(@))

(4sin9^(@)sin21^(@)sin39^(@)sin51^(@)sin69^(@)sin81^(@))/(sin54^(@))

Value of (4\ sin 9^@ sin 21^@ sin 39^@ sin 51^@ sin 69^@ sin 81^@)/(sin 54^@) is equal to

sin ^ (2) (51 ^ (0) -x) + sin ^ (2) (39 ^ (@) + x) = 1) -12) 03) 14) 2