Bearings and direction word problems  Bearings
Bearings and direction word problems
Lessons
Notes:
Theorems that are useful:
Pythagorean Theorem: $a^{2} + b^{2} = c^{2}$
Trig ratio: $\sin \theta = \frac{O}{H}$
$\cos \theta = \frac{A}{H}$
$\tan \theta = \frac{O}{A}$
Law of sine: $\frac{a}{\sin A} = \frac{b}{\sin B} = \frac{c}{\sin C}$
Law of cosine: $c^{2} = a^{2} + b^{2}  2ab \cos C$

1.
Evaluate A Bearings Word Problem Using Trigonometric Ratios
Charlie leaves home for a bike ride, heading 040°T for 5km.

4.
Triangulate the Location of an Earthquake
Radar X detected an earthquake N55°E of it. 16km due east of Radar X, Radar Y detected the same earthquake N14°W of it.