Question

. Three cell phone towers form a triangle. The distance between the first tower and
second tower is 16 km. The distance between the second tower and the third tower is
19 km. The distance between the first tower and the third tower is 19 km. Calculate
the angles between the cell phone towers.

Answer 1

Step-by-step explanation:

by cosine rule you can find the angles

• cosine rule

$cos \alpha = ({a}^{2} + b {}^{2} - c {}^{2} ) \div 2ab$

if a=BC, b=AC, c=AB

alpha is the angle between BC,AC