Find the edge length of the cube with the given volume. Show your work.

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Use the given information to determine the exact trigonometric value.