Prove that the angle inscribed in a semi circle is a right angle.
A chord AB one of the two concentric circles intersects the other circle at points C …
A circle passes through the vertices of a right angled triangle. Show that the centre…
Two chords AB and AC of a circle subtend equal angles with the radius passing through …
Prove that the straight line joining the middle points of two parallel chords of a cir…
A merchant has 1000 kg of sugar , part of which he sells at 8% profit and the rest at…
One quality of wheat at Tk. 9.30 per kg is mixed with another quality at a certain ra…