Verified answer

Объяснение:

sin(α)/cos(α)+cos(α)/1+sin(α)

((1+sin(α))*sin(α)+cos^2(α))/((1+sin(α))*cos(α))

(sin(α)+sin^2(α)+cos^2(α))/((1+sin(α))*cos(α))

(sin(α)+1)/((1+sin(α))*cos(α))

1/cos(α)

ОТВЕТ: sec(α)