## lilly21 3 years ago help me pleeaazz! the altitude of an equilateral triangle is 20 inchs long. to the nearest inch, what is the length of each side of the triangle? a. 16 in b. 17in c. 23 in d. 40in

1. mr.luna

hold on lemme get my calculator bruno mars

2. lilly21

lol im a girl u know, i just like him. everyone gets me a hard time about it!

3. mr.luna

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4. mr.luna

is that what you menat by atitude?

5. lilly21

im guessing.... thats all the problem says it includes like no diagram

6. mr.luna

dude i took calculus and this is hard. give me a sec ok

7. lilly21

ok.

8. mr.luna

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9. mr.luna

thats all i got. -_-

10. lilly21

ok so its 3 (x's) in total and they = 60? i think u wrote? the drawing goes off the square drawing thing so i cant really tell

11. mr.luna

the 60 is the degrees of the angles

12. lilly21

so all of them = to 60 degrees? as in every single one of them have a value of 60 degrees?

13. petewe

yes, so that means the top angles are 30 + 30. so just use your primary trig ratios since you have 2 right triangles.

14. lilly21

so its a 30 60 90 triangle right?

15. petewe

yep

16. mr.luna

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17. lilly21

:) thanks, both of u guys!