Simple Nature - Light and Matter

The distance from San Diego to Las Vegas is found using the Pythagorean
theorem, √
(172 km)^2 + (376 km)^2 = 410 km
(rounded to two sig figs because it’s one of our final results). The
direction is one of the two possible values of the inverse tangent

tan−^1 (∆y/∆x) ={ 65 ◦, 245◦}.

Consulting a sketch shows that the first of these values is the correct

one.

Examples with solutions — p. 233, #62; p. 233, #63; p. 230,

#45

Problems you can check atlightandmatter.com/area1checker.

html— p. 232, #53; p. 232, #57; p. 233, #58; p. 238, #79; p. 230,

#46

Problems 1017