Prove: (sec A + tan A) (1 – sin A) is equal to

(sec A + tan A) (1 – sin A) is equal to
(a) sec A
(b) sin A
(c) cosec A
(d) cos A

Solution:

(sec A + tan A) (1 – sin A)

is equal to
(a) sec² A
(b) – 1
(c) cot² A
(d) tan² A

Solution:

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