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W i t h o u t   u sin g   t r i g o n o m e t r i c a l   t a b l e   e v a l u a t e   t h e   f o l l o w i n g cos   58 ° sin   32 ° + sin   22 ° cos   68 ° - cos   38 °   cos e c   52 ° tan   18 °   tan   35 °   tan   60 ° - tan   72 °   tan   55 °

Hi, cos58sin32+sin22cos68-cos38cosec52tan18 tan35 tan60 - tan72 tan 55 = cos90-32sin32+sin90-68cos68-cos90-52sin52tan18 tan35 tan60 - tan72 tan 55= sin32sin32+cos68cos68-sin52sin52tan18 tan35 tan60 - tan72 tan 55=1+1-1tan18 tan35×3- tan72 tan 55=2-1tan90-72 tan90-55×3- tan72 tan 55=2-1cot72cot55×3- tan72 tan 55=2-tan72 tan 553- tan72 tan 55=2-tan72 tan 5513+1=2-tan72 tan 55×3+13

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