Evaluate:
` (cos 58^@)/(sin 32^@)+(sin 22^@)/(cos 68^@)-(cos 38^@cosec 52^@)/(tan 18^@tan 35 ^@ tan 60^@tan 72^@tan 55^@)`.

Without using Trigonometric Tables evaluate the following :- (cos58^@)/(sin32^@)+(sin22^@)/(cos68^@)-(cos38^@ cosec52^@)/(tan18^@tan35^@tan60^@tan72^@tan55^@) .

(sin18^0)/(cos72^0)+(sin22^0)/(cos68^0)-(cos38^0cos e c52^0)/(tan18^0tan35^0tan60^0tan72^0tan55^0)

(sin18^(0))/(cos72^(0))+(sin22^(0))/(cos68^(@))-(cos38^(0)cos ec52^(0))/(tan18^(@)tan35^(@)tan60^(@)tan72^(@)tan55^(@))

Evaluate : (sin70^@)/(cos 20^@)+(cosec36^@)/(sec54^@)-(2cos43^@cosec47^@)/(tan10^@tan40^@tan50^@tan80^@ .

Evaluate: (cos 55^(@))/(sin 35^(@))+(cot 35^(@))/(tan 55^(@))

Evaluate the ((3 cos 43^(@))/(sin 47^(@)))^(2) - (cos 37^(@) "cosec" 53^(@))/(tan 5^(@) tan 25^(@) tan 45^(@) tan 65^(@) tan 85^(@))

Without using Trigonometric Tables evaluate the following :- (2cos65^@)/(sin25^@)-(tan20^@)/(cot70^@)-sin90^@+tan5^@tan35^@tan60^@tan55^@tan85^@ .

Without using Trigonometric Tables evaluate the following :- (2cos67^@)/(sin23^@)-(tan40^@)/(cot50^@)-cos0^@+tan15^@tan25^@tan60^@tan65^@tan75^@ .

Prove that : (i) (sin 70^@)/(cos 20^@)+(cosec 20^@)/(sec 70^@)-2cos 70^@cosec 20^@=0 (ii) (cos 80^@)/(sin 10^@)+cos 59^@cosec 31^@=2 (iii) (2 sin 68^@)/(cos 22^@)-(2 cot 15^@)/(5 tan 75^@)-(3tan 45^@tan 20^@tan 40^@tan 50^@tan 70^@)/(5)=1 (iv) (sin 18^@)/(cos 72^@)+sqrt(3) (tan 10^@ tan 30^@tan 40^@tan 50^@tan 80^@)=2 (v) (7cos 55^@)/(3 sin 35^@)-(4(cos 70^@cosec 20^@))/(3(tan 5^@tan 25^@tan 45^@tan 65^@tan 856^@))=1