If u(t) = < sin(5t), cos(7t), t > and v(t) = < t, cos(7t), sin(5t) > , use the formula below to find the given derivative. d/(dt)[u(t) cross v(t)] = u'\(t\) cross v(t) + u(t) cross v'\(t\)

What term best describes a line ans a point that lie in the same plane

Which one is true about the hexagons ?

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?