Flashcards: Cosine

\(\displaystyle \tan N = \frac{\sqrt{y}}{5}\)

Evaluate \(\displaystyle \cos N\) in terms of \(\displaystyle y\).

\(\displaystyle \sqrt{ \frac{y}{y+25}}\)

\(\displaystyle \frac{5} {\sqrt{y}}\)

\(\displaystyle \frac{ \sqrt{y+25}}{5}\)

\(\displaystyle \frac{5}{ \sqrt{y+25}}\)

\(\displaystyle \sqrt{ \frac{y+25}{y}}\)

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