Question

Help! Fan & medal :)
Given triangle ABC with a = 22, b = 17, and c = 19, find measure of angle A . Round the cosine value to the nearest thousandth and answer to the nearest whole degree.

Answer 1

can you get a picture of it?

Answer 2

I worked this whole problem and got -166.... which is not an answer :/

Answer 3

it is easy

Answer 4

yes but still i want to be sure

Answer 5

i mean attach it as a file

Answer 6

yeah that will work

Answer 7

Okay.. I used this formula and got -166
a^2 = b^2 + c^2 - 2bccosA

Answer 8

I dont know what i did wrong..

Answer 9

nor do I see were you are wrong

Answer 10

59 is not an answer :/

Answer 11

i am gonna guess and say 75 i might be wrong i would wait for someone with more math knowledge

Answer 12

75,109

Answer 13

How did you get 75 do you mind going through the problem with me? did you use the formula?

Answer 14

@hazem-wardat

Answer 15

ok i am back