Question

write the factors of-15g3h2k2​

Answer 1

given that sec a -1/ sec a +1 =1-cos a/ 1+ cos a to prove LHS=RHS

now, sec a = 1/cos a so, (1/cos a-1) / (1/cos a+ 1)

==( 1-cos al cos a) / (1+cos a /cos a)

== 1-cos a / 1+cos a = RHS