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2 (121 :ar (55° + x) = cot (35° - x)ec (70° — 9) > ८०86८ (20? + 9)° 4+ A) = cos (62° — A) |
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Answer» i) tan ( 55 + x) = cot ( 90 - ( 55 + x)) = cot ( 35° - x) ii) sec ( 70° - ) = cosec ( 90° - ( 70 - )) = cosec ( 20 + ) iii) sin ( 28° + A) = cos ( 90 - (28 + A)) = cos ( 62° - A) |
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