[" Fruffered an "417" fromfere."],[[" (i) "(sin18^(@))/(cos72^(@))," (ii) "(tan26^(@))/(cot64^(@))," (iii) "cos48^(@)-sin42^(@)," (iv) "csc31^(@)-sec59^(@)]]

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

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

(sin48^(@))/(cos42^(@))+(cos48^(@))/(sin42^(@))=2

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

((sin48^(@))/(cos42^(@)))+((cos48^(@))/(sin42^(@)))=2

(sec70^(@))/(csc20^(@))+(sin59^(@))/(cos31^(@))

Evaluate:(iii) Cos48^@-Sin42^@

Without using trigonometric tables , evaluate : (i) (sin11^(@))/(cos79^(@)) (ii) (sec15^(@))/("cosec"75^(@)) (iii) (tan54^(@))/(cot36^(@)) (iv) (cos68^(@))/(sin22^(@)) (v) ("cosec"24^(@))/(sec66^(@)) (vi) (cot18^(@))/(tan72^(@))

Without using trigonometric tables , evaluate : (i) (sin11^(@))/(cos79^(@)) (ii) (sec15^(@))/("cosec"75^(@)) (iii) (tan54^(@))/(cot36^(@)) (iv) (cos68^(@))/(sin22^(@)) (v) ("cosec"24^(@))/(sec66^(@)) (vi) (cot18^(@))/(tan72^(@))

Evaluate : (i) tan42^(@)-cot48^(@) (ii) sec36^(@)-"cosec"54^(@)