Find the value of the following : (a) `sin 210^(@)` (b) `cos 220^(@)` (c ) `tan 245^(@)`

Find the value of the following : (a) sin 120^(@) (b) cos 135^(@) (c ) tan 150^(@)

Find the value of the following : (a) sin ( - 30^(@)) (b) cos (-60^(@)) (c ) tan (- 45^(@))

Find the values of the following :- {:((a)sin390^(@)"",(b)cos 405^(@)),((c)tan420^(@)"",(d)cos 450^(@)),((e)sin(2pi+(pi)/(6)),(f)cos(2pi+(pi)/(3))):}

(a) Find the value of followings : (i) sin 150^(@) , (ii) cos 135^(@) , (iii) cos (-30^(@)) , (iv) tan 225^(@) . (b) If cos theta =(4)/(5) . Find the value of sin theta and tan theta . (c) Find the value of sin ^(-1)(1) .

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 values of the following :- {:((a)sin(-30^(@)),(b)cos(-45^(@))),((c)sin(-60^(@)),(d)tan(-45^(@))):}

Find the values of the following allied angles : (iii) tan 210^(@)

Find the value of tan210^(@)

Find the values of the following trignometric ratios: (a) "cos"480^(@) (b) sin 1125^(@) ( c) tan(-480^(@)) ( d) "cosec"(-1200^(@))

Find the value of : cos210^(@)