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Verified Answer :

Answer:

\(\displaystyle Cosine\)

Step-by-step explanation:

\(\displaystyle \frac{HYPOTENUSE}{ADJACENT} = sec\:θ \\ \frac{ADJACENT}{HYPOTENUSE} = cos\:θ\)

You can easily tell how these trigonometric ratios are multiplicative inverses [reciprocals] of each other.

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Answer: Cosine

Step-by-step explanation:

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