" i) "(sin18)/(cos72)

Evaluate : (i) (sin18o)/(cos72o) (ii) (tan26o)/(cot64o) (iii) cos48o-sin42o (iv) "c o s e c 31osec""""59o"

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

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

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

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

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

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

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

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