Verifying Identities

Verify that = is a solution:

sin + cos

sin = 1 + cot

Verify that = 30o is a solution:

(sec )(1 + cos ) = 1 + sec

Non-Permissible Values

Determine the non-permissible values of :

sin + tan

1+ cos = sin sec

sin cot

sec = cos2

On the interval 0 ≤ θ < 2π, identify the non-permissible values of θ for the trigonometric identity:

tan θ = 1cot θ