Find the value of : `cos 210^0`

Find the value of :- cos210^@

Find the value of : cos210^(@)

Find the value of : cos 1395^0

Find the value of: (i) cos 210^(@) (ii) "sin" 225^(@) (iii) "tan" 330^(@) (iv) cot(-315^(@)) (v) "sec"(11pi)/(4)

Find the value of :- sin210^@

Find the value of cos210^o

Find the value of :- (210)^3

Find the value of (iv) sin 210^(@)

Find the value of (iv) sin 210^(@)

Find the value of cos (-171 0^(@))