cot 38 cot 52 cot 78 cot60 10.) AOB of a circle at a central angle is
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cot 38 "cot 52" cot 78 "cot60 10.) AOB of a circle at a central angle is a nass and a point C at a corner of a statue. A, C, B, C 40, C a Ce a, (i) tanZABC CO1ZACO ( ii) cosec'CAB-1-tanZABC (1) without 'ZBCO + without' ZACC-1
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