Final answer:
The trigonometric function that is equal to the adjacent and hypotenuse of a right triangle is the cosine function.
Step-by-step explanation:
The trigonometric function that is equal to the adjacent and hypotenuse of a right triangle is cosine (option b).
In the context of trigonometry, the SOH-CAH-TOA acronym represents the three basic trigonometric ratios:
- Sine (SOH) - opposite/hypotenuse
- Cosine (CAH) - adjacent/hypotenuse
- Tangent (TOA) - opposite/adjacent
Since the question asks for adjacent and hypotenuse, the correct answer is cosine.