A surveyor measured a triangular plot of ground and reported the three angles as being 58.2 degrees, 70.0 degrees and 61.1 degrees. How much of an error did the surveyor make?

8.7
3.1
15.3
9.3

Question

A surveyor measured a triangular plot of ground and reported the three angles as being 58.2 degrees, 70.0 degrees and 61.1 degrees. How much of an error did the surveyor make?

8.7
3.1
15.3
9.3

radar · Answer

How many degrees to the angles of a triangle sum up to:  Or another way of sayin, How many degrees in a triangle?

radar · Answer

*to do

anonymous · Answer

180

anonymous · Answer

Use the triangle sum theorem.
58.2 + 70 + 61.1 must equal 180
If it doesn't, the amount of error is the difference between the two measures.

radar · Answer

How many degrees did the surveyors triangle have ?

anonymous · Answer

9.3 is the difference

radar · Answer

You will see the answer when you answer that.

radar · Answer

Yes

anonymous · Answer

my brain is so fried thank you would you help out with a couple more

anonymous · Answer

you made that so easy i wish i had an instructor that would make it that easy

radar · Answer

If I am capable. I will try.

anonymous · Answer

What is the height of a triangle of area 70 square inches if its base is 20 inches?

A. 3.5 inches	

B. 14 inches	

C. 7 inches	

D. 5 inches

radar · Answer

Do you know the formula for the area of  a triangle?

anonymous · Answer

a2+b2=c2

anonymous · Answer

my bad its 7

anonymous · Answer

a=1/2bh

radar · Answer

If you look it up, it is:   A = 1/2 base times the height.  That formula is a very important formula for a right triangle.  It is saying the hypotenuse (the longest side) squared is equal to the sum of the square of each of the other two sides (a,b)  This does not apply here as we don't even know for sure it is a right triangle.  The area formula is the one we can use to solve this problem.

radar · Answer

Hey you are way ahead of me lol.  OK lets plug in the values we know:
70 =1/2(20) h     The height is the unknown quantity we are attempting to solve.

radar · Answer

Lets work what we have:   70=10h   Can you solve for h?

radar · Answer

Or we could turn it around and have 10h=70

radar · Answer

Did you understand where I plugged the base (20) into the equation?   The area of 70 ?

radar · Answer

Ary stuck @BuffaloBill?

radar · Answer

* are you

anonymous · Answer

sorry my mouse batteries ran out, yup got it all

radar · Answer

What did you come up for h the height?

anonymous · Answer

yes