`sin2 0^(@)+sin4 0^(@)-sin8 0^(@)=`

prove that sin10^(0)+sin20^(0)+sin40^(@)+sin50^(0)=sin70^(0)+sin80^(@)

(cos20^(0)+8sin70^(0)sin50^(@)sin10^(0))/(sin^(2)80^(@)) is equal to

Write the value of the expression 1-4sin10^(0)sin70^(@)2sin10^(0)

Prove that: sin12^(0)sin48^(0)sin54^(@)=(1)/(8)

The value of sin^(2) 46^(0) + sin^(2) 14^(0) + sin 46^(0) sin 14^(0) =

Write the value of the expression (1-4sin1 0^0sin7 0^0)/(2sin1 0^0)

The value of the expression (2(sin1^(0)+sin2^(0)+sin3^(0)+...+sin89^(@)))/(2(cos1^(0)+cos2^(0)+...+cos44^(0))+1) equals

(sin8^(0)*sin52^(0)*sin68^(@))/(sin24^(0)) is equal to 12-1(1)/(4)

Prove that: (cos8^(0)+sin8^(0))/(cos8^(0)-sin8^(@))=tan37^(0)

Prove that 2sin2^(0)+4sin4^(0)+6sin6^(0)+......+180sin180^(@)=90cot1^(0)