Question

(secB + tanB)(1-senb)=1

Answer 1

((1/ cosb )+(sinb / cosb ))(1 - sinb ) = 1
((1 + sin b ) / (cosb) )  ( 1 - sinb) = 1
( 1- sin ∧2( b)) / (cosb) = 1
( cos∧2(b) ) /( cosb) = 1
cosb = 1
 b = 0 , 2pi , 4pi , 6pi ,........
b= n x2pi  donde n = 0,1,2,3,4 ....