stott1691 stott1691

28-03-2024
Mathematics

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Which of the following is equivalent to [tex]\frac{cos2x}{cosx}[/tex]?
I -- 2cos x − sec x
II -- sec x − 2(sin x)(tan x)
III -- [tex]2sinx-\frac{2}{cotx}[/tex]

a. I only
b. I and II
c. I and III
d. I, II, and III

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