Slides in this set
Angle at centre is twice that at circumference,
this doesn't have to be in a arrow head as
shown here, but it has to be from the same two
points. You might see the word subtended
written down, this is just
a another way of
Alternate segment theory : The angle between
the tangent and chord at the point of contact is
equal to the angle in the alternate segment.
Look out for a triangle with one of its vertices
resting on the point of contact of the tangent.
a b…read more