`Cos255^(0)+sin165^(0)`=

cos 225^(@)+ sin 165^(@)=

The value of cos 255^(@)+sin165^(@) is

Evaluate: det[[cos15^(0),sin15^(0)sin75^(0),cos75^(0)]]

Which of the following number(s) is/are rational? (a)sin 15^(0)(b)cos15^(0)(c)sin15^(0)cos15^(0)(d)sin15^(0)cos75^(0)

The value of (cos24^(0))/(2tan33^(0)sin^(2)(57^(0)))+(sin162^(0))/(sin18^(0)-cos18^(0)tan9^(0))+cos162^(0) is equal to

Prove that: (cos11^(0)+sin11^(0))/(cos11^(0)-sin11^(0))=tan56^(@)

cos25^(0)cos35^(0)-sin10^(0)sin20^(0) ,

Show that sin70^(0)cos10^(0)-cos70^(0)sin10^(0)=(sqrt(3))/(2)

Prove that 1 + (cos105^(@) + cos 165^(@))/(sin 105^(@) + sin 375^(@))= 0

" The value of "(sin1^(0)+sin3^(0)+sin5^(0)+sin7^(0))/(cos1^(0)*cos2^(0)*sin4^(0))" is "