can someone give me a basic run down on proving easy trigonometry ? Please ! ! !!!

Question

amit1235813 · Answer

How easy? :P

sugarmochi · Answer

like uhm- can i show you an example question? $$BD = 10(\sqrt{3}-1) $$

sugarmochi · Answer

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sugarmochi · Answer

show thatt* BD=10(3√−1)

amit1235813 · Answer

Ah, in such questions you need to apply formulas like Sin x = Side1/Side2

amit1235813 · Answer

Let us walk step by step, how many triangles do you see?

sugarmochi · Answer

two

amit1235813 · Answer

Cool, that means two such formulas will be applied. One each for one triangle. 

Next step is to figure out whether to choose Sin, Cos or Tan. Do you know how to do that?

sugarmochi · Answer

we're given the hypotenuse and adjacent, so cos?

amit1235813 · Answer

um, which one is 15 and which is 45?

amit1235813 · Answer

i cant figure it out in the image, sorry

sugarmochi · Answer

the top triangle corner is 15 and the bottom one is 45 
soz i didnt draw it properly

amit1235813 · Answer

AD = 15 and DC = 45 ??

sugarmochi · Answer

angle BAD is 15 
angle DAC is 45

amit1235813 · Answer

Ah, okay

Hmm, try using cos and see what you get..

mathmale · Answer

Glad that some people are trying to give you a basic introduction, but even "easy trig" is so broad a subject that your asking for a rundown on it is far beyond the scope of this site.  Please ask specific trig questions instead.