The torque on a coil in a uniform field

my teacher states that
1: torque = BANI . sin theta
2: torque = BANI . cos phi (where phi is the angle between the coil and the field).

B = magnetic flux density
A= area of coil
N = number of turns
I = Current

are these two formulae right?
also, what is the area in this case, cross sectional or surface?
thanks alot.

The torque on a coil in uniform field :
τ = BANI sin ϕ ( ϕ is the angle between the coil and the field