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

Eriko is a participant in a study in a cognitive neuroscience lab at her university. As Eriko completes a task, functional magnetic resonance imaging reveals su

what is the theme of the song "red" by taylor swift?

Which of the following is an example of allusion? A. His words stung like a swarm of angry hornets whose nest was just kicked over. B. Even the sun decided to p

which of the following describes the teenage brain's relationships to rewards

When did William Shakespeare die and how?

The following table shows a portion of a three-year amortization schedule. A 3-year amortization schedule. The loan amount or principal is 11,940 dollars and th

Help me on this please I’d appreciate it

How many moles of magnesium are in 3. 01 x 10^22 atoms of magnesium.

The total number of pennies on Row 1 is: 1 2 4 8 16 32 64 128 =.

What is the main source of energy for most life on earth? __