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54. tane cote+1 + tande1 + cot? esec 0 cosec 0 - 2 sin cos OTz - Tg Ts - T55. If Tn = sin" @ + cos”sin" @ + cos" , provethatT T322111+ sinde1 - sin? e=256.tan 0 ++tancos ecos o11sin? e cos? 0 =1 – sine cos?2 + sin? @cose57. sinsec? 0 - cos? o ' cosec? 0 - sin’e21 - cos e58.1 + sin 0 - cos e1 + sin 0 + cos1 + cos e59. (sec A + tan A – 1) (sec A - tan A + 1) = 2 tan Aso A) - 2 |
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