Question

Which expression is equivalent to cot t sec t?

Answer 1

you got one in mind?

Answer 2

cotangent is cosine over sine, secant is one over cosine (the question is really testing if you know those fact)
write
\[\frac{\cos(x)}{\sin(x)}\times \frac{1}{\cos(x)}\] and see what you can do with it

Answer 3

no

Answer 4

csc t

sin t

tan t

sin2 t

csc2 t