Question

A= 48 degrees, c= 10, b = 59
B= ? degrees C= ? degrees. a=?

Answer 1

?

Answer 2

DO YOU KNOW SINE LAW ?

Answer 3

i do but i am having trouble with it

Answer 4

maybe i dont know how to use it properly in this question

Answer 5

you will first need cosine law,
plug in the given values in
\(\large a^2 = b^2+c^2-2bc\cos A\)
and you'll get a :)

Answer 6

omg no wonder lol. okay let me see and can u check my answer?

Answer 7

sure!

Answer 8

for a i got 54. 5276

Answer 9

correct?

Answer 10

i am getting...52.833
let me re-calculate.

Answer 11

okay

Answer 12

yup, still getting same. a = 52.833
just using calculator...

Answer 13

can you show me how you set it up with the numbers substituted?

Answer 14

\(\large a^2 = 59^2+10^2-2*10*59\cos 48\)

Answer 15

omg you are right. i accidently put cos 59 instead of 48

Answer 16

https://www.google.co.in/webhp?sourceid=chrome-instant&ion=1&ie=UTF-8#sclient=psy-ab&q=100%2B59%5E2-20*59*(cos+48degrees)&oq=100%2B59%5E2-20*59*(cos+48degrees)&gs_l=hp.3...13349.13349.1.13880.1.1.0.0.0.0.333.333.3-1.1.0...0.0.0..1c.1.15.psy-ab.Nz2JMok9pvk&pbx=1&bav=on.2,or.r_cp.r_qf.&bvm=bv.47244034,d.bmk&fp=b5f964b073a2b6d9&ion=1&biw=1092&bih=480

Answer 17

okay now to find the angles

Answer 18

ohh..k

Answer 19

now you can use sine law

Answer 20

okay and can you check to see if i got the sine law correct?

Answer 21

ofcourse :)

Answer 22

okay so for angle B I got 56.139?

Answer 23

yup correct :)

Answer 24

so now i add 56.1 + 48 and subtract that with 180 to get angle C?

Answer 25

absolutely correct :)

Answer 26

so you got C as ?