Respuesta :

highwireact
sec(90deg)

sec(x) is defined as 1/cos(x). If we measure x in degrees, then cos(90) = 0, and so sec(90) = 1/0, which is undefined
ANSWER: The answer is sec 90




EXPLANATION:
Sec 90= 1/ cos 90
Sec 90= 1/0
Sec 90= undefined


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