Question

find the missing side. enter sin, cos, or tan. 28° 15 z ?(28°) = \frac{blank}{z}

Explanation:

Step1: Identify sides relative to 28°

In the right triangle, the adjacent side to 28° is 15, and the hypotenuse is \( z \).

Step2: Recall trigonometric ratios

The cosine of an angle in a right triangle is defined as \( \cos(\theta) = \frac{\text{adjacent}}{\text{hypotenuse}} \). For \( \theta = 28^\circ \), adjacent = 15, hypotenuse = \( z \), so \( \cos(28^\circ) = \frac{15}{z} \).

Answer:

\(\cos\); \(15\) (The first box is \(\cos\), the second box is \(15\))