ive been working on sine and cosine rules out this book, but they only do one example of each so ive had to rearrange them for the complete set but i still end up with the same angle using either, just need some clarification wether there right:

for e.g a/SIN A = b/SIN B = c/SIN C ,

a = c x SIN A/SIN C. SIN A = a x SIN B/B

b = a x SIN B/SIN A. SIN B = b x SIN C/C

c = b x SIN C/SIN B. SIN C = c x SIN A/A

 

Can you include parenthesis and keep the notation constant to be more specific?
They seem right but I can't be sure if you alternate the letter for the sides from small to capital.

 

TWO ANGLES given plus ANY SIDE
a = b x SIN A / SIN B
b = c x SIN B / SIN C
c = b x SIN C / SIN B

TWO SIDES given plus an ANGLE NOT ENCLOSED by them
SIN A = a x SIN B / b
SIN B = b x SIN C / c

ive created numerous triangles and i think this is write so far but for SIN C theres two where the answer is very close for each and i dont no what ones write:
SIN C = c x SIN B / b (i believe this may be the correct one)
SIN C = c x SIN A / a

 

Be careful with the sine rule it can lead to two answers in certain cases.

http://www.yteach.co.uk/index.php/r...scribed_triangle_area_ambiguous_t_page_6.html

The cosine rule will always lead to a unique answer.

 

All of your formulas are correct, but be careful when trying to find an angle, as Papabravo stated. You will get 2 answers and you must use your intuition and problem data to filter the wrong one.

The video linked is very informative.

 

Have I been promoted?

 

Have I been promoted?

I don't know about you, but E-book Developer is the highest rank I 'd like to have. Any higher and it would be too much work on the site to keep me interested in.

 

but E-book Developer is the highest rank I 'd like to have

It's not all milk and honey you know.
Especially since they won't adopt my suggestion of free beer for this rank.

No, by promotion I was thinking of being compared to papabravo and his ghost presence in this thread.

 

Free beer, eh? I 'm not in heaven yet, so I guess I can't have any.

As for your rep, I can't verify it personally, only time can.
Especially if you consider the phrase that says "Only after someone's death you can judge him properly", or something like that.

I for once, don't want to compete for the position of the "Math guru". What I would like however is the visitor of the site to acknowledge the time I spend here and that I generally provide correct answers.