" Evaluate: "((sin27)/(cos65^(@)))^(2)+((cos63^(@))/(sin27^(@)))^(2)

cos57^(@)+sin27^(@)=

Evaluate : sin25^(@)cos65^(@)+cos25^(@)sin65^(@)

Evaluate the following: (i) (cot40^@)/(tan50^@)-1/2((cos35^@)/(sin55^@)) (ii) ((sin27^@)/(cos63^@))^2-((cos63^@)/(sin27^@))^2

Solve the following: ((sin 27^@)/(cos 63^@))- ((cos 27^@)/(sin 63^@))^2

Evaluate : (sin^(2)63^(@)+sin^(2)27^(@))/(cos^(2)17^(@)+cos^(2)73^(@))

Evaluate: sin 25^(@) cos 65^(@) + cos 25^(@) sin 65^(@) .

Evaluate sin 27 ^(@) sin 63 ^(@) - cos 63^(@) cos 27 ^(@)