निम्नलिखित के मान ज्ञात कीजिए:
(i) `tan30^(@)cot60^(@)`
(ii) `sin30^(@).sin60^(@).sin45^(@).`

sin60^(@)*sec^(2)45^(@)-3tan30^(@).4sin60^(@)=

" (iv) (sin30^(@)+tan45^(@)-cosec60)/(sec30^(@)+cos60^(@)+cot45^(@))

(tan60^@)/(sin60^@+cos30^@)

tan (A + 30^(@)) + cot (A - 30^(@)) = (1)/( sin 2 A - sin 60^(@)).

Evaluate (sin30^(@)+tan45^(@)-cosec60^(@))/(sec30^(@)+cos60^(@)+cot45^(@))

sin30 ^ (@) sin ^ (2) (60) ^ (@) + 3cos60 ^ (@) tan45 ^ (@) =

Verify each of the following : (i) sin60^(@)cos30^(@)-cos60^(@)sin30^(@)=sin30^(@) (ii) cos60^(@)cos30^(@)+sin60^(@)sin30^(@)=cos30^(@) (iii) 2sin 30^(@)cos30^(@)=sin60^(@) (iv) 2sin45^(@)cos45^(@)=sin90^(@)

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

Evaulate : 4-(sin30^(@)+tan45^(@)-"cosec"60^(@))/(sec30^(@)+cos60^(@)+cot45^(@))

Find the value of (sin30^(@)+tan45^(@)-csc60^(@))/(sec30^(@)+cos60^(@)+cot45^(@))