" (iii) "sin690^(@)cos930^(@)+tan(-765^(@))cosec(-1170^(@))

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

sin690 ^ (@) cos930 ^ (@) + tan (-765 ^ (@)) cos ec (-1170 ^ (@))

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

Evaluate : (i) sin60^(@)*cos30^(@)-cos60^(@)*sin30^(@) (ii) tan30^(@)*cosec60^(@)+tan60^(@)*sec30^(@) .

When (2 sin 60^(@) cos 30^(@) cosec 45^(@))/(tan 45^(@) cos 60^(@) sin 45^(@)) is simplified , we get

The value of (sin25^(@)cos65^(@)+cos25^(@)sin65^(@))/(tan^(2)70^(@)-cosec^(2)20^(@))

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

Find the value of (i) sin (765^(@)) (ii) cosec (-1110^(@)) (iii) cot (-600^(@))

( sin (-660^(@)) tan (1050^(@)) sec (-420^(@)))/(cos(225^(@)) "cosec"(315^(@)) cos (510^(@)))=

Without using the trigonometric tables, evaluate the following : (11)/(7) (sin 70^(@))/(cos 20^(@)) - (4)/(7) (cos 53^(@) "cosec" 37^(@))/(tan 15^(@) tan 35^(@) tan 55^(@) tan 75^(@))