please tell the whole method
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Answer:
1,1,1
Step-by-step explanation:
we have sin(90-x)=cos(x)..[1]
tan(90-x)=cot(x)…..[2]
cosec(90-x)=sec(x)…..[3]
of we use [1] in (i) then we get that sin 72 = cos 18
=1
of we use [2] in (ii) then we get that tan 41 = cot 49
=1
of we use [1] in (i) then we get that cosec 17 30 = sec 72 30
=1
thanks