youngest85:
Very simple

Abeos:
Op I think this should be the diagram.

Abeos:
Op I think this should be the diagram.

officialola:


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Abeos:
Op I think this should be the diagram.

Rezos017:
Most bright students, even a huge percent of maths teachers, would still struggle to come up with a diagram that captures this question. Its not the solution that's difficult; its the diagram. Most times, students are taught only two dimensional bearing problems, but three dimensional problems like the one in the post are completely ignored.

Mrshape:
Some one draw my attention to a problem recently that he think is incorrect, he have search the Internet with many website have the question but no diagram or solution to it,
But behold the problem is correct, and easy, but I found out another problem of our students, which was also pronounced in the just concluded WASSCE mathematics question, I will reveal the problem I found out about our students later,
Let someone attempt this first

castro316:


Is this what you are looking for?

naturalwaves:

This diagram is wrong because your observational points C and D are not on the same horizontal ground as the foot A of the tower.

castro316:


Is this what you are looking for?

aorseer:

This is the correct diagram. Kudos

Mrshape:
Some one draw my attention to a problem recently that he think is incorrect, he have search the Internet with many website have the question but no diagram or solution to it,
But behold the problem is correct, and easy, but I found out another problem of our students, which was also pronounced in the just concluded WASSCE mathematics question, I will reveal the problem I found out about our students later,
Let someone attempt this first

naturalwaves:

So, that is your 18m due north right?

castro316:


Is this what you are looking for?

castro316:
mr man that diagram is in 3D. Try drawing a cube and make the bottom surface stay on the same level on your paper. Then tell me your waec grade after

Abeos:


My bad . Although how will that due north be placed then cos it's a bit ambiguous

naturalwaves:

Oponu! no be only 3D na 4D. We are all here to learn. What you drew makes no sense. Your points, C, A ,D should be on the same horizontal ground according to the question.Now, look at the rubbish you drew. Is this too difficult to understand? You need to learn how to take contrary opinion. Anyway, I have attached a step by step guide to put your likes through. Follow the steps and see what you will get. In case you do not understand, I will be attaching a step after step image soon. Maths no be lacram la pour o.

Abeos:


This should be right.

Just checked back now, the question says both A, C & D are at horizontal levels so don't think the diagram is correct

Rezos017:
There you have it. Virtually every detail of the question is captured in the diagram. It makes comprehension and calculating much easier.

naturalwaves:


SOLUTION

Question says;
C and D are observational posts on the same horizontal ground at the foot A of a vertical tower AB. The tower is 18m due North of D and 24m due East of C

Question should be
C and D are observational posts on the same horizontal ground AS the foot A of a vertical tower AB. The tower is 18m due North of D and 24m due East of C
After correcting the grammar, this is how it should be solved.

STEP 1

Mark a dotted point as the point D and trace it up to another dotted point. The second dotted point represents the tower. This should be a straight line. why? Because the question says the tower is 18m due North of D. So, label the line as 18m


STEP 2

From that second dotted point which represents the tower, draw another straight, dotted lines to the left and put a dot at the end to represent C. Label it as 24m. Why? The question says that, the tower is 24m due East of C


STEP 3
From the question , we know that points C and D are on the same horizontal ground. So, draw a straight line to join points C and D


STEP 4
Draw a straight line to join the line /CD/ from our initially dotted point that represents the tower. THAT STRAIGHT LINE YOU HAVE JUST DRAWN IS THE TOWER AB


STEP 5

We know from the question that the foot of the tower is A and the top is B. So, label the bottom that is now on the same line as /CD/ as A and label the top as B. You will then observe that the diagram is in line with the question as C,A and D are all on the same line.

I will attach the necessary pictures when I get on a phone I can snap with or when I can sketch. I am on the laptop now.
I hope this helps someone.