Question

if k+1=sec*sec(1+sinA)(1-sinA)

Answer 1

K+1=secsquare(1-sinsquare) k+1=secsquare*cossquare reciprocal of cos is sec So, k+1=secsquare*1/secsquare ,secsquare will cancel and then k+1=1 ,, k=1-1 therefore k=0 is the answer