Explanation:
tan (90-80)
cot 80
sin (90-11)
cosec 11
cot 80/cot 80*cosec 11/cosec 11
1*1
1
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Explanation:
tan (90-80)
cot 80
sin (90-11)
cosec 11
cot 80/cot 80*cosec 11/cosec 11
1*1
1