`sin 300^@ cosec 1050^@ - tan (-120^@)`

Simplify : sin 300^(@) cos 390^(@) tan (-855^(@))+cos(-120^(@))* sin (-330^(@))

Find the value of sin 330^(@) .cos 120^(@) + cos 210^(@) . Sin 300^(@) .

sin 690^@ cos 930^@ + tan(-765^@) cosec (-1170^@)

Evaluate : (sin 35^(@) cos 55^(@) + cos 35^(@) sin 55^(@))/ (cosec^(2) 10^(@) - tan^(2) 80^(@))

(a)Find the exact value of (sin 300^@tan 330^@ sec (-420^@) )/(cot 135^@ cos 210^@ cosec 315^@ )

Find the value of sin(135^(@))cosec(225^(@))tan(150^(@))cot(315^(@))

If cos 120^(@)=(-1)/(2) find the values of sin 120^(@) and tan 120^(@) .

Find the value of (a) cos 120^(@) (b) sin 240^(@) (c) tan (-60^(@)) (d) cot 300^(@) (e) tan 330^(@) (f) cos (-60)^(@) (g) sin (-150)^(@) (h) cos ( -120)^(@)

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