Rewrite Expression 14.

Question

Rewrite the expression in terms of sines and cosines only and then simplify the resulting expression.

 

cot x + tan x + csc x sec x

Answer 1

Use the identities:

 

cotx = cosx / sinx

 

tanx = sinx / cosx

 

cscx = 1 / sinx

 

secx = 1 / cosx

 

 

Plug in these identities into the original expression and simplify.