Which line has a slope of 1/2 and a negative y-intercept? *

If value of cos330° is √3/2 then find tan165°.

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?

What’s the volume of the triangular prism?