निम्नलिखित का मान ज्ञात कीजिए: (ए) `sin (- 30^(@))` (बी) `cos (-60^(@))` (सी ) `tan (- 45^(@))`

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

Evaluate : (tan45^(@))/(2sin30^(@)-cos60^(@))

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

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

sin^(2) 60^(@) + 2 tan 45^(@) - cos^(2) 30^(@)

2tan ^ (2) 45 ^ (@) + cos ^ (2) 30 ^ (@) - sin ^ (2) 60 ^ (@)

Find the value of sin^(2)30^(@)+cos^(2)60^(@)+tan45^(@) .

Evaluate : (sin 30^(@) + tan45^(@) - cosec 60^(@))/(sec 30^(@) + cos 60^(@) + cot 45^(@))

frac(sin 30^@. cos 45^@)(tan60^@ is equal to