Dos and Don'ts
Part (a) 10 marks, Part (b) 20 marks, Part(c) 20 marks.
attempt for each part of a question is 1/3 of the
marks for that part of the question.
One of the most popular topics examined on leaving cert Ordinary
Level Maths is Trigonometry.
to attack a Trigonometry question
Before starting any question on Trigonometry
that your calculator is in degree mode, deg should be
on the screen. If deg is not there, press the DRG button
(Sharp) until deg appears on the screen.
(b) Calculators work in degrees, so if the angle is given to
you in degrees and minutes you must tell the calculator
this by using the DMS button. It is best just to work
Many questions are based on the right-angled triangle,
and page 9 of the maths tables.
The above information
was all that was needed to answer all of the following
Questions (all taken from Paper 2) 1999Q5a, 1998Q5b, 1997Q5b,
1996Q5b, and 1995Q5a
of an arc Area of a sector
The following two
formulae will sort out anything that can be asked in this
Length of an arc
Area of a sector
Questions based on the above formulae were asked in 1999Q5b, 1998Q5a,
(all on page 9 of
(1) Area of a Triangle
(2) The Sine Rule
(3) The Cosine Rule