Question

Please Help?!

Answer 1

i am sorry idk.

Answer 2

use the laws of cosine

Answer 3

to find the remaining side use a^2= b^2 + c^2 - 2bc cos a

in your case:
a= the number your trying to find
b=3
c=4
cos a = .9659 (you can round it to the nearest hundredth)

Answer 4

you would use the same equation but,
a= the number you are trying to find
b= 176.27
c=222.34
cos a=.7816

this would like...
a^2= 31071.1129+49435.0756-(78383.7436) .7816
a^2= 80509.1885-61264.734
a^2= 19244.4545
now to get a you must square root that number to get:
a=138.7243832 (you can round that if you need to)
Hope this helps

Answer 5

For the first one after I find the length of side a how do I find angle B and angle C?

Answer 6

all you would need to do is find the angle of one and then add the two and subtract by 180 to find the other.

for angle B:
b^2= a^2 +c^2-2ac cos b

for angle c:
c^2= a^2 +b^2-2ab cos c

Answer 7

Okay. Thank you!