Question

in triangle ABC m 13 years ago

Answer 1

wat is m means here??

Answer 2

measure of angle

Answer 3

yes measure of angle the measure of angle B is twenty two degrees i need an explanation tto find the length of b using the law of sines

Answer 4

since all angles add up to 180, you can find A right?

Answer 5

use sin formula

Answer 6

then its a law of sines setup

Answer 7

third angle is 180 - sum of other 2

Answer 8

its 106

Answer 9

then sin(106)/30 = sin(B)/b, cross multiply to get

b = sin(106)/30sin(106)

Answer 10

.... tripped over my fingers

Answer 11

then sin(106)/30 = sin(B)/b, cross multiply to get

b = 30sinB/sin(106)

sounds better

Answer 12

ok so i now have 30 sin B but do i not have to use the calculater to sin 106 and then use the decimal it gives to do the rest of the problem or no?

Answer 13

sorry i have 30 sin b / SIN 106

Answer 14

remember B = 22, i was just being lazy :)

\[\frac{sinA}{a}=\frac{sinB}{b}\]
\[b==\frac{asinB}{sinA}\]
\[b==\frac{30sin(22)}{sin(106)}\]
my calculator gives me about 11.69109...

Answer 15

afterb i get that fraction couldnt i sin the numbers then relplace them in the problem such as this (30)(.3746) / .9613

Answer 16

you could if you want to yes

Answer 17

because doing it that way i got 11.6904

Answer 18

okay so i have that as an answer correct?

Answer 19

the nearest tenth is 11.7 either way, and yes that is correct

Answer 20

its to the nearest tenth of an integer

Answer 21

yes, the "tenths" position is one to the right of the decie

Answer 22

so 11.7

Answer 23

that would be great :)

Answer 24

thank you lol