Verify the identity.cos(u) sec(u)tan(u) = cot(u)Use a Reciprocal Identity to rewrite the expression, and then simplify.cos(u) sec(u)tan(u) =  cos(u) sec(u)   =  cos(u) · 1cos(u) ·   =

The text you provided seems to be incomplete. However, I can help you verify the identity cos(u) sec(u)tan(u) = cot(u). Here are the steps:

1. Rewrite the expression using reciprocal identities: cos(u) sec(u)tan(u) = cos(u) * (1/cos(u)) * (sin(u)/cos(u))

2. Simplify the expression: = 1 * sin(u) = sin(u)

This result is not equal to cot(u) which is cos(u)/sin(u). So, the identity cos(u) sec(u)tan(u) = cot(u) is not correct.