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COS A 1 + SIN A

--------- + -------------- cross multiply denominators & numerators

1 + SIN A COS A

cos² A + 1 + Sin² A 2

----------------------------- = ------------------ = 2 Sec A given

(1+sin A) Cos A (1 + sin A) cos A

=>

--------- + -------------- cross multiply denominators & numerators

1 + SIN A COS A

cos² A + 1 + Sin² A 2

----------------------------- = ------------------ = 2 Sec A given

(1+sin A) Cos A (1 + sin A) cos A

=>

**cos A Sec A = 1**__1 + Sin A = 1 => A = 0 or 2π__