If sin θ + sin² θ = 1, then cos² θ + cos θ =

5 tan² A – 5 sec² A + 1 is equal to

If sin A – cos A = 0, then the value of sin⁴A + cos⁴A is

The value of sin² 30° – cos² 30° is

If 3 cot θ = 2, then the value of tan θ

1

-4

1/2

-1/2

3/2