If `y sin 45^0 cos 45^0 = tan^2 45^0 cos^2 30^0` then `y =`

(1 - tan^2 45^0)/(1 + tan^2 45^0)

2sin45cos45

2sin45^(@)cos45^(@)

Consider the following I. (cot 30^@+1)/(cot30^@ -1) = 2 (cos300^@ +1) II. 2 sin 45^@ cos 45^@ - tan 45^@ cot 45^@ = 0 Which of the above identities is/are correct ?

If xsin45^0cos^2 60^0=(tan^2 60^0cos e c 30^0)/(s e c 45^0cot^2 30^0), t h e n x= 2 b. 4 c. 8 d. 16

If (xcos e c^2 30^0sec^2 45^0)/(8cos^2 45^0sin^2 60^0)=tan^2 60^0-tan^2 30^0, than x= (a)1 (b) -1 (c) 2 (d) 0

Evaluate : sin^2 60^@+ 2tan 45^@-cos^2 30^@

Evaluate the following (i) sin 60^@ cos30^@ + sin 30^@ cos 60^@ (ii) 2tan^2 45^@ + cos^2 30^@ - sin^2 60^@ (iii) (cos45^@)/(sec30^@ + c o s e c 30^@) (iv) (sin30^@ + tan45^@ - c o s e c 60^@ )/(sec30^@ + cos60^@ +cot45^@) (v) (5cos^2 60^@ + 4sec^2 30^@ - tan^2 45^@ )/ (sin^2 30^@ + cos^2 30^@ )

If A=sin45^(0)+cos45^(0) and B=sin44^(0)+cos44^(0) then (a)A>B(b)A=B

If tan x = sin45^(@) cos 45^(@) + sin 30^(@) then x is equal to