Plssss help fasttt , I’ll mark u as the brainlest and follow u too

Plssss Help Fasttt Ill Mark U As The Brainlest And Follow U Too class=

Answer :

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sec² θ (1 + sin θ) (1 - sinθ ) = k

sec² θ(1-sin²θ ) = k

sec² θ cos² θ = k

sec² θ. 1 /sec²θ = k

1 = k

.. k = 1.