Question

Solve the triangle.

A = 50°, b = 13, c = 6

choices:
a ≈ 10.2, C ≈ 26.3, B ≈ 103.7

a ≈ 14, C ≈ 26.3, B ≈ 103.7

No triangles possible

a ≈ 14, C ≈ 30.3, B ≈ 99.7

Answer 1

@lgbasallote

Answer 2

law of sines and cosines

Answer 3

ugh. what he/she said

Answer 4

i dont get it tho!!! can you show me.

Answer 5

how is the law of cosine defined?

Answer 6

im not sure. im no good at math

Answer 7

well, this is why they write down the formula in the pages of the textbooks ....

Answer 8

it a generalization of the pythag thrm; do you recall the pythag thrm by chance?

Answer 9

no

Answer 10

then you are clearly not ready to tackle this problem

Answer 11

thats why i am clearly here.

Answer 12

do you know about trigonometry?

Answer 13

nope. im taking pre-calc

Answer 14

precalc IS trigonometry

Answer 15

oh well then still no.

Answer 16

Have you just started learning that?

Answer 17

yes

Answer 18

After all one 'yes'

Answer 19

http://www.youtube.com/watch?v=F21S9Wpi0y8

Answer 20

i just started, and im doing my first assignment. so i needed help.

Answer 21

im in school we dont have access to youtube

Answer 22

oh! then did you try to ask to your teacher?

Answer 23

your first assignment is to play with the law of sines and cosines? they usually tend to build up to those things, or at least start you off teaching the trig functions

Answer 24

im doing virtual school, but its taken in school. shes not available right now,.

Answer 25

why are you questioning me so much? i just want help on this problem.

Answer 26

this IS the help. http://openstudy.com/code-of-conduct

Answer 27

We an not allowed to directly ANSWER problems. --- You must cooperate us by telling what You tried

Answer 28

your not that funny. im not looking for direct answers. im looking for something called H-E-L-P. you obviously dont know how to administor that.

Answer 29

good luck then

Answer 30

goodluck in learning how to help people.

Answer 31

spaz daw actually to start with this you must know about sines, cosines

Answer 32

that you don't

Answer 33

hence my resoning for coming to this site.

Answer 34

virtual schools love skipping fundamentals @mathslover

Answer 35

just show him an example/demonstration of the cosine law...im sure he'll pick it up

Answer 36

*she

Answer 37

my keyboard ha trouble preing that letter

Answer 38

lol

Answer 39

i would love to give you a demnstration of how cosine law works...but i cannot remember it anymore. I only know sine law. sorry

Answer 40

the pythag thrm is a special case of the law of cosines:

pythag thrm: c^2 = a^2 + b^2

the law of cosine generalizes this to any SAS triangle:\[c^2=a^2+b^2-2ab~cos(A)\]
when A = 90 degree, the end term goes to zero and we end up with the pythag thrm

Answer 41

for a proof ill use this drawing

Answer 42

by constructing this into a 90 degree triangle, we can compare this with the better known pythag thrm