Triangle side problem

[minko]

so i have a problem, i dont know how to get other side size
i have one side name a=22 cm, beta is 32 and gamma is 83 , i need to get b and c side.
What formula i need to use.

 

[pka]

so i have a problem, i dont know how to get other side size
i have one side name a=22 cm, beta is 32 and gamma is 83 , i need to get b and c side.

A triangle has only three(tri) sides. Are you asking about four sides?

 

[minko]

A triangle has only three(tri) sides. Are you asking about four sides?

im asking how to get b and c side, i have only a side inside is alpha and beta. I dont know what formula to use

 

[Deleted member 4993]

so i have a problem, i dont know how to get other side size
i have one side name a=22 cm, beta is 32 and gamma is 83 , i need to get b and c side.
What formula i need to use.

What formula/s do you know about triangles that involves side-length and angles?

 

[minko]

sine, cos and tangent, but when i use it.
i have tried using cos for beta and result is 18.7 cm, and i dont know is it correct.

 

[Deleted member 4993]

sine, cos and tangent, but when i use it.
i have tried using cos for beta and result is 18.7 cm, and i dont know is it correct.

Have you worked with:

Laws of cosines of a triangle &​

​

Laws of sines of a triangle​

Please check your textbook/notes and come back and tell us what those Laws are.

 

[minko]

i cannot found nothing in case of this problem.

 

[minko]

Have you worked with:

Laws of cosines of a triangle &​

​

Laws of sines of a triangle​

Please check your textbook/notes and come back and tell us what those Laws are.

i used laws of sines and i got b=12.81 cm and c is 24cm is it correct ?

 

[Deleted member 4993]

i cannot found nothing in case of this problem.

Please share your work in detail - for us to check those.

 

[minko]

This is results

 

[Deleted member 4993]

so i have a problem, i dont know how to get other side size
i have one side name a=22 cm, beta is 32 and gamma is 83 , i need to get b and c side.
What formula i need to use.

I do not understand the work shown in the above attachment.

It does not LOOK correct. I do not see any 'sin' or 'cos' in there

I am assuming (following general convention) that the side 'b' subtends angle beta, the side 'c' subtends angle gamma, and the side 'a' subtends angle alfa.

First (assuming the angle values are given in degrees), you need to calculate the value of angle 'alfa'.

Now you need to calculate the value of \(\displaystyle \frac{a}{sin(\alpha )}\)

Using that ratio (calculated above) and laws of Sines - you should be able to calculate 'b' and 'c'

 

[minko]

I did everything there but i didnt write sin infront of number

 

[Steven G]

OK, so go and put sin in front of the number.