Final answer:
The provided information does not allow for a calculation of the length of AC in a triangle. For vector magnitude calculations, trigonometric formulas are used, and a gamete contains half the number of chromosomes as a somatic cell.
Step-by-step explanation:
The length of AC in the triangle cannot be determined from the options and information provided, as there is not enough context to calculate it. However, to answer questions about the magnitude of a vector given its components or an angle, one would generally use the Pythagorean theorem or trigonometric relationships. For instance, the formula to find the magnitude of a vector (r) given its x-component (x) and angle (θ) to the horizontal is r = x / cos(θ).
As for the question about the number of chromosomes in a gamete, a gamete will have half the number of chromosomes of a somatic cell. So, if a muscle cell has 32 chromosomes, a gamete from that organism will have 16 chromosomes, which is half due to meiosis.