If cos A + cos² A = 1, then sin² A + sin⁴ A is :

1. 1

2. 2

3. 3

4. 4

Assertion (A): (1 − cosec² θ)(1 − sec² θ) = 1

Reason (R): 1 + tan² θ = sec² θ and 1 + cot² θ = cosec² θ

1. A is true, R is false

2. A is false, R is true

3. Both A and R are true

4. Both A and R are false