A sextant was among the tools that which duo used on their journey of about 8,000 miles to the Pacific Northwest and back?

What is a set with no elements called in mathematics? What word names a setback or piece of misfortune, such as a military defeat? A sexagesimal number system is based on which number? A sextant is used by navigators most simply to determine what? Which sexy title heroine, played by Jane Fonda in 1968, is a space adventurer of the far future? A shark named Bruce belongs to a support group for fish-eating sharks in which 2003 film? A shaving mirror, which magnifies your face, is usually which type? What is a sheath for a dagger or sword called?