Given,
(i) cos2 26o + cos 64o sin 26o + (tan 36o/ cot 54o)
= cos2 26o + cos (90o – 16o) sin 26o + [tan 36o/ cot (90o – 54o)]
= [cos2 26o + sin2 26o] + (tan 36o/ tan 36o)
= 1 + 1 = 2
(ii) (sec 17o/ cosec 73o) + (tan 68o/ cot 22o) + cos2 44o + cos2 46o
= [sec 17o/ cosec (90o – 73o)] + [(tan 90o – 22o)/ cot 22o] + cos2 (90o – 44o) + cos2 46o
= [sec 17o/ sec 17o] + [cot 22o/ cot 22o] + [sin2 46o + cos2 46o]
= 1 + 1 + 1
= 3