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very good phrontister
Olivia cut a rectangle into exactly nine squares. On inspection, he observed that the area of one square was 64 cm²
, the areas of two other squares were 16 cm²
, and the rest of them were 4 cm²
each.
What was the perimeter of the original rectangl
The isosceles right-angled triangle ABC
has its right angle at C. D is an interior point of side BC such that the angle CDA
is 75°. Given that triangle ADC has unit area, prove that BD=2.
The opposite sides of a convex hexagon
Thanks Bob great job
Find, without calculus, the largest possible value of
(sin 5x + cos 3x)/(sin 4x + cos 4x)
if the two roots of the equation
are elements of the interval find the interval ofhi bob
There is an important theorem in the external bisector of an angle in a triangle
This link can help
https://www.youtube.com/watch?v=ZKM6EYeYOhk
In ∆ ABC, AB =7, AC=5.An external bisector of
∠BAC intersects the circumcircle of
∆ABC at E. Let F be the foot of
perpendicular from E to line AB.
find AF
Now we can say great job
Thanks bob
There are some mistakes in your solution dear Bob
nice work
thanks Bob
Find the real solutions of the two equations
(1)
(2)
Prove that if two right-angled triangles
hi bob
I'm glad you liked these problems
For the acute angles problem,
Someone sent this solution hope you like it
https://www.youtube.com/watch?v=TZi-x7ctxrU
find x
Let
and be acute angles such that . Prove that .In an acute-angled triangle ABC, a tangent is drawn to the inscribed circle, parallel to side BC. The tangent intersects side AC at point D. F is the orthogonal projection of point D onto the side BC. Show that AB=AD+BF
1.solve in
hard
from Μιχάλης
from Mr Παύλος
M,N,Z,I midpoint
find the area of EMBN
find AB
FROM Mr Doloros
What is the ordered pair of real numbers (x,y) for which
123x+ 321y= 345
and
321x+ 123y= 543?
hi bob
Just for fun