Question

Help?

Answer 1

do you know the law of cosine what say ?

Answer 2

you learned it ?

Answer 3

C^2= A^2 + ^2-2 abcosC

Answer 4

no with words

the cosine of an angle is equal ---- ????

Answer 5

calculating one side of a triangle when the angle opposite and the other two sides are known

Answer 6

yes really in case of a right triangle like in case of your above posted exercise

Answer 7

no

the law of cosine say that the cosine of an angle in case of a right triangle is equal with adjacent side of this angle divide hypotenuse

Answer 8

ok go on

Answer 9

cos A = adj / hyp

Answer 10

so cos A = ?

Answer 11

please check this posted image

Answer 12

i got 1.1

Answer 13

what choice is right from these 4 choices ?

Answer 14

idkk

Answer 15

what side is adjacent to angle A ?

Answer 16

hypotenuse

Answer 17

i ve wrote above side not hypotenuse

Answer 18

can u just tell me the answer cause that would help me

Answer 19

sorry this is opposite to the rules of OS.

Answer 20

i like teach you how can you solve this posted question

Answer 21

cmon we are both Romanian

Answer 22

indifferent sorry

are you really from Romania ? from what city ?

Answer 23

bistrita

Answer 24

bistrita násáud
yes ?

but how you know me that i m romanian ? from my profile ?

Answer 25

yes

Answer 26

ok. so i like help you but you need collaborate and pleas courage try answering my questions bc. i like teach you how you need solving this exercise easy

ok. ?

Answer 27

im actually done for now but ty for helping

Answer 28

do you really know the right answer of this posted exercise ? so what will be right ?

Answer 29

cos A = adj. / hyp.

adj. side is AC and the hyp. is AB.

so what choice is right ?