(cos x+cot x)sec x=1 +cosec x?

ali

This is a "proving of identities" problem

tomv

(cos x+cot x)sec x=1 +cosec x

(cosx + cosx/sinx)/cosx = 1 + 1/sinx

cosx + cosx/sinx = cosx + cosx/sinx

0 = 0

QED

mike-g

(cos x+cot x)sec x

=(cosx+cosx/sinx)/cosx

= 1+1/sinx

=1+cosec(x) QED

anonymous

cos(1+cosec)sec=1+cosec