Question

prove that
(1 - cos A) (1 + sec A) = tan A sin A​

Answer 1

Answer:

True

Step-by-step explanation:

(1 - cos A) (1 + sec A)

(1 - cos A)(1 + 1/cos A)

(1 - cos A)(cosA +1)/cos A

(1 - cos A)(1 + cos A)/cos A

(1 - cos² A) / cos A

By identiy sen²A = 1 - cos²A

sen²A / cos A

sen A * sen A /cos A

tan A * sen A