Which part of the technological design process involves learning from other scientists that have solved the problem before? help please hal

Looking at the electroscope, describe how you can cause the two leaves at the bottom to repel each other and stay that way

The value of sin(x) (in radians) can be approximated by the alternating infinite series create a function (prob3_2) that takes inputs of a scalar angle measure (in radians) and the number of approximation terms, n, and estimates sin(x). do not use the sin function in your solution. you may use the factorial function. though this can be done without a loop (more efficiently), your program must use (at least) one. you may find the mod() function useful in solving the problem.

What phrase indicates someone has knowledge and understanding of computer,internet,mobile devices and related technologies?