cos210^(@)

Evaluate cos 210^(@)

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

Find the values: (ii) sin 135^(@) cos 210^(@) tan 240^(@) cot 300^@ "sec" 330^(@)

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

Find the value of : cos 210^@ .

Give the following in polar form : [2(cos 210^@ + i sin 210^@)] [4(cos 120^@+i sin 120^@)] .

(i) Find tan(- (2pi)/(3)), cos 315^(@), sec210^(@), cosec225^(@), Tan(- (23pi)/(3)), cot(-300^(@)) and sin. (-(17pi)/(4)) .

Find the value of following :- {:((a)sin 150^(@)"", (b)sin 135^(@)), ((c)cos 120^(@)"", (d)tan 225^(@)), ((e)cos 240^(@)"", (f)sin 210^(@)), ((g)sin 315^(@)"", (h)sin 300^(@)):}

Find the value of following :- {:((a)sin 150^(@)"", (b)sin 135^(@)), ((c)cos 120^(@)"", (d)tan 225^(@)), ((e)cos 240^(@)"", (f)sin 210^(@)), ((g)sin 315^(@)"", (h)sin 300^(@)):}