Question

Please see the attachment

Answer 1

Hmm to make it clearer, AB = AC

Answer 2

can be anything between 0 and 90

Answer 3

need more info, i guess

Answer 4

I assume there is an exact value ?!
Note: that's all i've got for the question

Answer 5

analytically, whatever angle be BAC, above figure can be drawn. how can u find exact value??

Answer 6

agree with Arnab, I don't think there's enough info... Is BC given?

Answer 7

if the length of segment was given, i guess it would be possible

Answer 8

Sorry but if i knew, i wouldn't have asked. It's a question from my friend and that's all she gave me for the question. She said the answer was like 67.5

Answer 9

that's the answer for what?

Answer 10

length of BC?

Answer 11

@dpaInc angle ABC or ACB whatever,

Answer 12

AD=CD, it would be given

Answer 13

@Arnab09 it's not stated in the question. She read it from the answer

Answer 14

oh! sorry, @Callisto i guess not enough data given here

Answer 15

No problem, thanks for taking a look!

Answer 16

well i arrived at the answer your friend did

Answer 17

was your friend's answer right?

Answer 18

I hope so, she read from the solution

Answer 19

ok, then we must assume that AD=DC

Answer 20

but how would you make such assumption if you don't know the answer?

Answer 21

not sure on that one, maybe there is a theorem that states it

Answer 22

law of sines perhaps?

Answer 23

How?

Answer 24

i dont think so ... third side is missing

Answer 25

if CD is given, the required angle can be calculated easily

Answer 26

If CD had been given, I wouldn't have asked

Answer 27

I think it can have any value between 45 to 90 ... since you can always draw perpendicular from one base angle to other side

Answer 28

i think descartes might work

Answer 29

Can you explain a little bit?

Answer 30

i cant draw on this thing for nothing;

descartes would label all the lines; known and unknown; then write up all the relations he could think of until he could construct a set of n equations in n unknowns and solve

Answer 31

You don't have enough information. First triangle 1 equation two unknowns second triangle 1 equation 3 unknowns. Combine unknown angle from both equations and you have 1 equation two unknowns.

Answer 32

Okay, that's what I'm doing right now :S