Law of sines help

[minko]

I have question where i know b=18cm, alpha 75°, beta 42° and gamma 63°, the question is to get c and a side .
I got results but im not sure if it is correct ?

 

[Steven G]

You are using the correct formulas and the correct values. I did not check if your calculation is correct.

 

[Dr.Peterson]

The work is right; but I would never round the sines so much. Keep several decimal places (ideally, all that your calculator has -- never copying a number back into it) to avoid rounding errors. Your last digit is wrong in each answer.

 

[minko]

The work is right; but I would never round the sines so much. Keep several decimal places (ideally, all that your calculator has -- never copying a number back into it) to avoid rounding errors. Your last digit is wrong in each answer.

Alright thanks for advice.