Question

find: cos a
the figure is not drawn to scale.
answer
\\(\frac{55}{48}\\)
\\(\frac{55}{73}\\)
\\(\frac{48}{73}\\)
\\(\frac{48}{55}\\)

Explanation:

Step1: Recall cosine definition

In a right triangle, $\cos(\theta) = \frac{\text{adjacent side}}{\text{hypotenuse}}$.

Step2: Identify sides for angle A

For angle A, adjacent side is 48, hypotenuse is 73.

Step3: Calculate $\cos A$

$\cos A = \frac{48}{73}$.

Answer:

$\frac{48}{73}$ (corresponding to the option with $\frac{48}{73}$)