## ThaJokersRiddles Group Title How do you find the sides of a triangle if they only give you 1 side but all 3 degrees of the angles. 2 years ago 2 years ago

• This Question is Open
1. ThaJokersRiddles Group Title

|dw:1336450108160:dw|

2. Study23 Group Title

That's a special triangle. In the 30-60-90 triangle, the proportion of the sides are $$\ \sqrt{3}:1:2$$, respectively.

3. ThaJokersRiddles Group Title

How would I solve for the sides though?

4. Study23 Group Title

So in this case, that means: |dw:1336450392069:dw|

5. Study23 Group Title

That means the side lengths are ....?

6. ThaJokersRiddles Group Title

7, 14, and 12?

7. robtobey Group Title

Use the Law of Sines http://en.wikipedia.org/wiki/Law_of_sines

8. Study23 Group Title

Ummm... Well, you have 7, and 14, so substitute 7 as x in the shortest side, and get 7sqrt3. So the answer is $$\ \huge 7, 14, 7\sqrt{3}$$.

9. ThaJokersRiddles Group Title

I thought that was 7*the sqrt of 3 lol

10. Study23 Group Title

@robtobey I was going to suggest that at first; however, I think this method is equally as effective.

11. Study23 Group Title

@ThaJokersRiddles Does this make sense to you now?

12. ThaJokersRiddles Group Title

Yea

13. robtobey Group Title

The problem statement does not infer a right triangle.

14. Study23 Group Title

Great!

15. Study23 Group Title

@robtobey, @ThaJokersRiddles drew the problem that indicates a right angle.

16. robtobey Group Title

Ok. I stand corrected.

17. Study23 Group Title

However, the law of sines would be effective had this been a non-right triangle.