" Trove that "(cos80)/(sin10)+cos59(cosec31=2

Prove that: (cos18o)/(sin10o)+cos59o cos ec31o=2

Prove that: (cos80^@)/(sin10^@)+cos59^@\ cosec\ 31^@=2

Prove that : (cos80^(@))/(sin10^(@))+cos59^(@)cosec31^(@)=2

Evaluate : (cos80^@)/(sin10^@)+cos59^@ cosec31^@ .

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

Evaluate the following: (i) (cos80^o)/(sin10^o)+cos59^o\ cos e c\ 31^o (ii) (cot54^o)/(tan36^o)+(tan20^o)/(cot70^o)-2 (iii) (2tan53^o)/(cot37^o)-(cot80^o)/(t a n\ 10^o)

(cos80^(@))/(sin10^(@))+cos59^(@)cos ec31^(@)=2

Prove that ((cos70^(@))/(sin20^(@)))+((cos59^(@))/(sin31^(@)))-8cos^(2)60^(@)=0

Prove that: (i) sin35 sin55-cos35 cos55=0 (ii) (cos70)/(sin20)+(cos59)/(sin31)-8sin^2 30=0

Prove that (i) sin 70^(@) cos 10^(@) -cos 70^(@) sin 10^(@) =(sqrt(3))/(2) (ii) cos 50^(@) cos 10^(@) -sin 50^(@) sin 10^(@) =(1)/(2) (ii) cos 80^(@) cos 20^(@) + sin 80^(@) sin 20^(@) =(1)/(2) (iv) sin 36^(@) cos 9^(@) + cos 36^(@) sin 9^(@) =(1)/(sqrt(3))