What is the length of side x in the triangle below?

Question

donka74 · Answer

attachment

anonymous · Answer

Would you say this is a scalene triangle? or an isosceles triangle?

anonymous · Answer

Nvm this is easy... Look at this.

anonymous · Answer

@donka74 look...

anonymous · Answer

You can see an easy 45 degree angle.... Right under the "7" and to the right of the "x"... Which means its a scalene triangle. Okay?

anonymous · Answer

Now, if a triangle has 180 degrees in all, and the lower-left corner have 60 degrees... and the upper left corner have 30 degrees... and u know its a scalene so it has to have 3 different degrees.

jdoe0001 · Answer

30-60-90 rule http://upload.wikimedia.org/wikipedia/commons/4/45/30-60-90_triangle.jpg notice the ratios

anonymous · Answer

yup now u have to scale it... to find he length of the side x...

donka74 · Answer

i had got 4.67 as my answer but then i did it again an got 4.04

anonymous · Answer

This actually got tough for me, i thought i learned this last year lol  (11th grade here)

anonymous · Answer

Had geometry last year

donka74 · Answer

im a senior lol

anonymous · Answer

Yeah this is where, all those rules of "sine" and "cosine" come in, sadly, I never learned them like that...Sorry cant help but bump question or a new question on here or googlelike "how to find the length of a side, knowing only two angles and one length of a side", etc. Later and nice tho.

donka74 · Answer

the answer was 4.04 thanks tho

jdoe0001 · Answer

$\bf 7 = x\sqrt{3} \implies \cfrac{7}{\sqrt{3}} = x$

jdoe0001 · Answer

and yes, if you use decimal, it'd be 4.04

donka74 · Answer

Thanks

anonymous · Answer

Wow it really was that, amazing easy formula right there....