₦airaland Forum

Martinez39:
This thing hard. I will wait for Mrshape's basic solution. I can't kee myself.

Darivie04:
Sorry I made a dumb mistake here

x=15units

Martinez39:
I will solve this when I am free.

Darivie04:
Sorry I made a dumb mistake here

x=15units

Darivie04:
x=3.26units

Darivie04:
Congrats!!

starbuck:
Bole and tilapia smoked by me after weeks of lectures...

Honestly, I salute the roadside vendors because I couldn't deal with the aftermath of the smoke

cassidy1996:
let me try

Shugah:
Hello nairaland family,
come and savor this Sunday meal with me...
A local delicacy known as achicha & agbugbu/fio fio. It's indigenous to the people of Enugu State, Nigeria. The only seasoning I used is maggi and little salt for taste although you can add scent leaf, crayfish or any other spice of your choice but note that it's a local dish and you don't want it tasting like fried rice. You can serve it with fried fish, smoked fish, ponmo or any thing you use to eat your abacha. Highly proteinous and delicious!
Join me please...It's tastier than it looks.

Darivie04:
Just seeing it but 40° seems to work(I might be missing something)

Martinez39:
@Mrshape, Darivie04

I got 30°.

The required angle is 30°(π/6 radian).


I used coordinate geometry after many attempts to use laws of sines and laws of cosine which gave very very tedious work(Be warned!). Using coordinate geometry was tedious but not too tedious.

TIP : for those using coordinate geometry, remember that similar triangles have the same shape and therefore the same corresponding angles. So use any size that yields convenient coordinates. To test my answer, observe that the largest triangle is an isosceles triangle.

Kkings11:
Your tangent angle is also not clear ( the diagram)

I know say if I dey your class you for don flog me tire.
No Vex abeg

Kkings11:
when solving for area B what you did not consider area A, why is that

Darivie04:
I believe the problem can also be bashed through coordinate geometry and some calculus.

Tried to explain the best I could but kept the length of my solution in mind. Also did not state overly basic facts/formulas as they are assumed to be well known by the reader.

Martinez19:
The first method will erase your username.

Martinez19:
There are two ways.
1) Press the report button and click 8 in the space provided.
2) Click the modify button, erase your post, type a full stop and submit.

Martinez19:
I used coordinate geometry and calculus. My method is not too basic. I am sure you and Darivie04 have simpler solutions. Why my eye on dey gree see simple solution?

Kkings11:
I don tell una before abeg show your workings.
Some of us dey use style dey learn oh.

Thank you.

Martinez19:
@Mrshape, Darivie04

A = 18(3.6 - π) - 9Sin^-1(-0.6) ≈ 14.04284221452cm²

NB: When using a calculator to evaluate 9Sin^-1(-0.6), angle must be in radians.

#Martinez39

Darivie04:
Cc. Mrshape

Area of blue region = 14.039cm²