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12-03-2017
Mathematics

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What basic trigonometric identity would you use to verify that (sin² x + cos² x/cos x) = sec x?

A. sin x = (1/csc x)
B. 1 + cot² x = csc² x
C. cos² x + sin² x = 1
D. tan x = (sin x/cos x)

Respuesta :

12-03-2017

c because when you solve thats whaat you get

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