If \( \cos X=\frac{a}{b} \), then \( \tan X \) is equal to: a. \( b^{2}-\frac{a^{2}}{b} \) b. \(...

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If \( \cos X=\frac{a}{b} \), then \( \tan X \) is equal to:
a. \( b^{2}-\frac{a^{2}}{b} \)
b. \( \frac{\sqrt{b-a}}{b} \)
c. \( \frac{\sqrt{b^{2}-a^{2}}}{a} \)
c. \( \sqrt{\frac{(b-a)}{b}} \)
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