Respuesta :

nkuvaeva2008

Answer:

a = alpha

(sin a)^2

Step-by-step explanation:

(tan a)^2=(sin a)^2/(cos a)^2

(sec a)^2 = 1/(cos a)^2

if we combine we get ((sin a)^2 * (cos a)^2)/(cos a)^2

simplafy

HOPE THIS HELPSSSS<3

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