math problem

[dantheman2007]

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I can't upload the picture because its dimensions are too large and I don't know how to alter them.

you have what looks like an equilateral triangle (3 sides); with a base of 10, left side with a length of 16 and the corresponding angle of 30 degrees, what's the area?.

Or better yet, those who own top score it's question 35 on test 3.

Thanks,
Dan

 

[pluginchugin]

is the answer 40?
i dont have a topscore book

I split the triangle in half making a 2 equal right triangles.
I used soh cah toa

sin 30 = x/16
x = 8
then multiplied 8 and 5 (this is half of 10 since i cut the triangle straight down the middle) and got 40 which was really the formula for a square but if u put 2 right triangles together in a 69 position, it makes a square.

 

[dantheman2007]

you got it, but how?
thanks
i tried using the pythagoream theorom to get the height by splitting the base in half, but I am not getting 40.
thanks,
dan

 

[pluginchugin]

hmmm... i dont know what the triangle looks like but chances are, its not an equilateral triangle... if u use the pathagor...ean*? theorem AND split it in half it HAS to be a right triangle... 5 is probably not the bottom measurement. did the question say it was an equilateral triangle?

 

[dantheman2007]

i had to use sin for this question.
you got it, thanks
-dan