" (a) "int(sin18^(@))/(cos72^(@))

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

Evaluate: (i) (sin 18^(@))/(cos 72^(@))

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

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

Evaluate : (sin 18^(@))/(cos72^(@))

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

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

Evaluate : (sin 18^(@))/(cos 72^(@))

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