3. You climb a hill at point C to get an idea of where to travel next. You can see the edge of a forest (point D). You climb to the bottom of the hill and walk to point D. You track your distance and find you have travelled 98 meters. Using a sextant, you measure the angle from point D to the top of the hill at point C to be 34.5 degrees.
How far is it from point D to the top of the hill at point C?
4. There is a large mountain from point to D to point E. There is no safe way around it or over it that makes sense. A tunnel will have to be built. You know the distance from point D to point 2 is 132 m and the distance from point 2 to point E is 145m. If you strung a rope from point D to point 2 and from point 2 to point E, the angle that formed would be 22.5 degrees.
How long will the tunnel need to be?