lilly21
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
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mr.luna
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hold on lemme get my calculator bruno mars
lilly21
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lol im a girl u know, i just like him. everyone gets me a hard time about it!
mr.luna
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mr.luna
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is that what you menat by atitude?
lilly21
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im guessing.... thats all the problem says it includes like no diagram
mr.luna
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dude i took calculus and this is hard. give me a sec ok
lilly21
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ok.
mr.luna
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mr.luna
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thats all i got. -_-
lilly21
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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
mr.luna
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the 60 is the degrees of the angles
lilly21
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so all of them = to 60 degrees? as in every single one of them have a value of 60 degrees?
petewe
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yes, so that means the top angles are 30 + 30. so just use your primary trig ratios since you have 2 right triangles.
lilly21
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so its a 30 60 90 triangle right?
petewe
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yep
mr.luna
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lilly21
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:) thanks, both of u guys!