Decline in a Road Welcome! You are encouraged to register with the site and login (for free). When you register, you support the site and your question history is saved.A road declines 30° from horizontal over a distance of 60 feet, as measured by a tape on the road's surface. At the base of the incline is a hole 7 feet deep. What is the difference in elevation between the top of the incline and the bottom of the hole? Review Answer