Question

MEDAL
Please tell me if I got the right answer... Find the length of a.

Answer 1

\[A = 12^{2} + 15^{2} - 2(12)(15)\cos(110º)\]
\[A = 369 - 360\cos(110º)\]
\[A \approx 492.127\]

Answer 2

Your correct. Just use the small a instead of the big \[a\]

and you forgot to square root the whole thing. \[\sqrt{expression} ?\]

Answer 3

Oh! I was just trying to show a quick version... And right! I forgot to make it a lowercase! Thanks :)

Answer 4

Thinking logically the value a can't be so large ..yes square root. Nice well done.

Answer 5

Thanks!

Answer 6

yw =))

Answer 7

@mebs Can you check another one?

Answer 8

Post it

Answer 9

Find the missing side length A.

Answer 10

What did you do?

Answer 11

\[A ^{2} = 18^{2} + 8^{2} - 2(18)(8)\cos(43º)\]

Answer 12

Am I off in the right direction?

Answer 13

Correct.

Answer 14

I got 177.4

Answer 15

Take the square root.

Answer 16

oh! Okay so it is 13.32

Answer 17

Yes

Answer 18

Thanks! So with every answer I get, I need to take the square root for the answer?

Answer 19

yes