If 0

½ cot A [1-(sec A – tan A)2 / cosec A(sec A – tan A)] is

Options are

a) 2 b)0 c) 1 d)1/2

cos0 is 1,sec0 =1,tan0 =0 ,and cosec0=infinity. so the given problem isnuminater is zero ,the dinaminater is infinity ,so the fainel answer is zero(0).

 

cos0 is 1,sec0 =1,tan0 =0 ,and cosec0=infinity. so the given problem isnuminater is zero ,the dinaminater is infinity ,so the fainel answer is zero(0).in yhe given quasition aption (b) is the right answer.