Question

Which of the following is a key element in the proof of the law of cosines?

Answer 1

wheres your answers

Answer 2

A. the triangle inequality theorem
B. Angle A+ Angle B+ Angle=180
C. A=1/2b*h
D. d=square root of (x^2+x^1)+(y^2-y^1)^2

Answer 3

@some.random.cool.kid

Answer 4

ok back

Answer 5

I'm in a middle of a quiz and I'm trying to pass but I'm always off by something.

Answer 6

Would you happen to know the answer?

Answer 7

i will do the best i can however what module is this?

Answer 8

Geometry?

Answer 9

no i mean like module 1 or 2 etc.

Answer 10

What do you mean?

Answer 11

nvm

Answer 12

Sorry.

Answer 13

ok so let me try and solve this

Answer 14

ok so im reading on this.. and from what i can tell it looks like B

Answer 15

but im 75% sure

Answer 16

if you get it wrong sorry

Answer 17

It was D to anyone else

Answer 18

Its d.