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^@ ) `