Geometry problems

[wiwatmongkonthan]

Give me some guideline.

 

[Deleted member 4993]

Give me some guideline.

Are those two separate Problems?

Please show us what you have tried and exactly where you are stuck.

Please follow the rules of posting in this forum, as enunciated at:

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Please share your work/thoughts about this problem.

 

[wiwatmongkonthan]

Ok i will try it.

 

[Dr.Peterson]

Give me some guideline.

For the one asking for angle C, it seems obvious to use the Law of Cosines, and to simplify the given equation to see if it is relevant. Unfortunately, I find that I can determine angle B, not angle C, that way.

But having tried that, the other problem turns out to yield to similar thinking.

So these appear to be trigonometry problems, not geometry proper. Give them a try, and show us how far you get.

 

[wiwatmongkonthan]

Ok i’ve finished first exercise.

 

[wiwatmongkonthan]

So i’ve finished second exercise.
Thank you.

 

[Steven G]

Good job. This is the exact reason why we do not give out answer! If we give some good leading hints students can do the problems themselves

 

[wiwatmongkonthan]

Thank you very much.