plshelpmeasmuch plshelpmeasmuch

16-01-2021
Mathematics

contestada

law of cosines
please show your work :)
Will mark as brainlest

law of cosines please show your work Will mark as brainlest class=

Respuesta :

16-01-2021

Answer:

33.9

Step-by-step explanation:

cos rule:

a²=b²+c²-2xaxbxcosA

rearrange:

cosA=(b²+c²-a²)÷(2xaxb)

solve:

cosx=(8²+22²-16²)÷(2x8x22)

cosx=(64+484-256)÷352

cosx=292÷352

cosx=0.830

cos^-1(shift cos)=33.9

Answer Link

Otras preguntas

1) One equation of a system of equations is 5x + 2y = 10. What is the second equation such that the system is independent? A) x = -2/5y + 2 B) y = -5/2x + 15

The acceleration due to gravity on planet X is one fifth that on the surface of the earth. If it takes 4.1 s for an object to fall a certain distance from rest

3/4 (6+ 2X) show work

The race of people that Adolf Hitler believed was the master race

The person who was put to death for the 1995 bombing of a federal building in Oklahoma City had once been a member of what organization? an anti-abortion gro

Point Z is equidistant from the vertices of ΔTUV. Which must be true

a rectangle is three centimeters.longer than it is wide. if its length were to be decreased by two centimeters, its area would decrease by thirty square centime

The federalist papers a. were written by opponents of the constitution, who feared that a tyrannical government would be a consequence of ratification. b. were

Ajax buys 20 shares of stock at 20$ per share. The shares increase in value by 20%. He then sells 10 shares. After the shares decrease in value by 10%, he buys

The framers of the constitution left the issue of voter enfranchisement to