सिद्ध कीजिए की:
` tan (A-30 ^(@)) + cot ( A-30^(@) ) =( 1)/( sin 2A -sin 60^(@) ) `

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

(2 tan 30^(@))/( 1-tan ^(2) 30^(@)) = (a) cos 60 (b) sin 60 (c) tan 60 (d) sin 30

(sin ^ (2) 30 ^ (@) cos ^ (2) 45 ^ (@) + 4tan ^ (2) 30 ^ (@) + (1) / (2) sin ^ (2) 90 ^ (@) + (1) / (8) cot ^ (2) 60 ^ (@)) =?

Prove that (sqrt(3)+1)(3-cot30^(@))=tan^(3)(60)^(@)-2sin60^(@)

If x tan 30^(@) = (sin 30^(@) + cos 60^(@))/( tan 60^(@) + sin 60^(@)) , then the value of x is :

( 2tan 30 ^(@) )/( 1+tan ^(2) 45^(@) ) = (a) sin 60 (b) cos 60 (c) tan 30 (d) sin 30

What is the value of sin^(3) 60^(@) cot 30^(@) - 2 sec^(2) 45^(@) + 3 cos 60^(@) tan 45^(@) - tan^(2) 60^(@) ?

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