Verified answer

Hola

Resultado notables

cos(60°) = sen(30°) = 1/2

sen(45°) = cos(45°) = 1 / √2

ó

sen(45°) = cos(45°) = √2 / 2

Deducimos

sec(45°) = 1/cos(45°) = 1/(1/√2) = √2

Nos queda

= (√2 + (1/2) ) (√2/2 + (1/2))

= (√2√2 / 2 + (1/2) √2 + (1/2) √2/2 + 1/4

= 2 + (1/2) √2 + (1/4) √2 + 1/4

= 9/4 + (3/4) √2

= (3/4) ( 3 + √2)

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Saludos