# Lab 01: navigation: compass challenge

<div id="bkmrk-part-one%3A">Part one:</div>

1. trace out a map of the big island
2. using your phone in compass mode, take a sighting of at least three peaks you can identify on your huge map.
3. triangulate from there to your location

<div id="bkmrk-part-two%3A">Part two:</div><div id="bkmrk-pick-a-place-on-your">

1. pick a place on your map that you need to be rescued from
2. you have 1 minute of cel battery left, and your gps is not working
3. calculate the angles you would see from this point to each of the major peaks on the island
4. post your numbers on the whiteboard (or below) for the class to locate you

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</div></div><div id="bkmrk--1">  
</div><div id="bkmrk-3840px-hawaii_island"><figure>![3840px-Hawaii&#95;Island&#95;topographic&#95;map-fr.svg.png](https://bookstack.kamuela.org/uploads/images/gallery/2026-09/1kQFDBpn3e0M46J6-3840px-hawaii-island-topographic-map-fr-svg-8goytjpj.png)<figcaption>3840px-Hawaii\_Island\_topographic\_map-fr.svg.png</figcaption></figure>  
  
</div><div id="bkmrk-mystery-location%3A"><span style="font-weight: bold;">Mystery location:</span></div><div id="bkmrk-kohala-62%C2%B0">Kohala 62°</div><div id="bkmrk-mauna-kea-123%C2%B0">Mauna Kea 123°</div><div id="bkmrk-mauna-loa-160%C2%B0">Mauna Loa 160°</div><div id="bkmrk-hualalai-181%C2%B0"><span style="font-weight: bold;">Hualalai 181°</span></div>---

<small>Migrated from Apple Server Wiki. Original page ID: U7x9h9U4B6</small>