Answer :

(i) Consider L.H.S. = = = (2-√3)


Consider R.H.S. = =


= (Rationalizing the denominator)


=


= 2 - √3


L.H.S. = R.H.S.


Hence, verified.


(ii) L.H.S. =


R.H.S. = cos 30° = √3/2


L.H.S. = R.H.S.


Hence, verified.


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