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cos4x — sin x 2cos2x — 1 5sin x then the tanx — secx — tanx numerical value of — cotx tanx cotx tanx secx — cos x — sin x 2cos2x — 1 . 144 If (cosec29 — 1) = and 9 is acute, then what is the values of 25 cote + tan9 ? 144 cot9+tan9 (cosec2 6 — 1) = 25 13 2 15 (C) 13 60 (B) 13 13 (D) 2 15 . 4. cosec 9 = 10 ................
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