Identify each matrix a such that a^2 has identical diagonal elements

Organisms that live in the alpine and taiga biomes have developed unique adaptations that aid in their survival. the douglas-fir is a conifer tree that grows in the taiga biome. it has an average height of about 70 feet, and its wood is an important source of lumber.

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

Solve for x and select the correct answer