Question

FAST PLEASE
kindly give a proper explanation​

Answer 1

Step-by-step explanation:

$k + 1 = \sec {}^{2} ( \alpha ) (1 - \sin {}^{2} ( \alpha ) ) \\ k + 1 = \sec {}^{2} ( \alpha ) \times \cos {}^{2} ( \alpha ) \\ k + 1 = 1 \\ k = 0$