` (sin 18^@)/( cos 72 ^@) = ? `

What is the value of (sin18^@)/(cos72^@) .

Evaluate : (sin18^@)/(cos72^@) .

sin 78^(@) - sin 18^(@) + cos 132^(@) =

Evaluate : (i) (sin18^@)/(cos72^@) (ii) (tan26^@)/(cot64^@) (iii) cos48^@-sin42^@ (iv) c o s e c 31^@sec59^@

Evalute: (b) (sin18^(@))/(cos72^(@))

Prove that (sin18^(@))/(cos72^(@))=1

(1) (sin18 ^ (@)) / (cos72 ^ (@)) (ii) (tan26 ^ (@)) / (cot64 ^ (@))

Evaluate : (cos 75^(@))/ (sin 15^(@)) + (sin 12^(@))/ (cos 78^(@)) - (cos 18^(@))/ (sin 72^(@))

cos 6^(@) sin 24^(@) cos 72^(@) =