Write the trigonometric function sec(30-theta) in terms of its cofunction.
sec(30-theta)
Let [30 - θ] = α
And
sec α = csc [ 90 - α]
So
sec θ =
sec α =
csc [ 90 - α] =
csc [ 90 - (30 - θ)] =
csc [ 60 + θ ]
