A simple problem?

[Andrey02]

Hello my name is Andrey and i have a problem thats atached down with the methods i used to solve it .The problem seem simple but i tryed doing it in 2 methods of resolving and the results were similar but not identical so i just want to know If i just made a mistake somewhere or maybe a method wasant right to be used in my problem.Ty for your time hope You can help me.
Here is the problem in case the image atached don't work:https://ibb.co/jbQtsdz

 

[Otis]

[tried] doing it in 2 methods … the results were similar but not identical … want to know If i just made a mistake

Hello Andrey. What are your two results?



[imath]\;[/imath]

 

[Andrey02]

Hello Andrey. What are your two results?



[imath]\;[/imath]

I asumed one of the methods wasant used right so i don't rlly upload them

 

[Otis]

I asumed one of the methods wasant used right so i don't rlly upload them

Hi. Can you type your two results, instead of "uploading" them? Evaluating that trig expression yields a number, right?

[imath]\;[/imath]

 

[Andrey02]

Hi. Can you type your two results, instead of "uploading" them? Evaluating that trig expression yields a number, right?

[imath]\;[/imath]

Sure one was 9+5✓7/16 second was 9(+/-)4√7/16

 

[Otis]

[first] was (9 + 5√7)/16

second was (9 ± 4√7)/16

Thanks.

(9 + 4√7)/16 is correct. Another way to get it would be the Law of Sines.

(9 - 4√7)/16 is negative.

Check your work for (9 + 5√7)/16, if you haven't already. That method is valid, too.

You may show your steps, if you can't find the error.

[imath]\;[/imath]

 

[Andrey02]

Thanks.

(9 + 4√7)/16 is correct. Another way to get it would be the Law of Sines.

(9 - 4√7)/16 is negative.

Check your work for (9 + 5√7)/16, if you haven't already. That method is valid, too.

You may show your steps, if you can't find the error.

[imath]\;[/imath]

Thanks i will check again