guy34 guy34
  • 01-01-2018
  • Mathematics
contestada

How to find the angles measures using the law of sines and cosines

How to find the angles measures using the law of sines and cosines class=

Respuesta :

tynollette tynollette
  • 01-01-2018
when the three side lengths are given, use law of cosine;
a²=b²+c²-2bcCosA
exampel: 17²=10²+11²-2*10*11CosA
220CosA=100+121-289=-68
CosA=-68/220
use a calculator to find: A≈107
Answer Link

Otras preguntas

Give 5 natural examples of unbalanced forces around us. Other than friction.
If five slices of pizza cost $5.50, how much do two slices cost? Ten slices? Half a slice ?
what is the equation of a line in slope-intercept form with a slope of -3/4 and a y-intercept of -2
What is the connection between 2.3 times 6.9 and 6.9 divided by 2.3.
How to calculate 100MB at 56 Kbps to transfer time?
Translation: how long has it been?
what is the 7.5x10 exponent 5 of scientific notation
What is this answer?10y=360°
A jar contains 133 pennies. a bigger jar contains 1 2/7 times as many pennies. what is the value of the pennies in the bigger jar?
There are 30 students in a class that took a test. The average grade of 10 students was 80. The other 20 students average was 89. What is the overall average fo