Prove that:

(i) (ii)


(ii)

(i) LHS


Dividing numerator And denominator by cos 11°,





We know that



= tan 56° = RHS


Hence proved.


(ii) LHS


Dividing numerator And denominator by cos 9°,





We know that



= tan 54° = RHS


Hence proved.


(iii) LHS


Dividing numerator And denominator by cos 8°,





We know that



= tan 37° = RHS


Hence proved.


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