Archive2: Following questions
are taken from Mathematics IEB Exam Papers(1992).
Question 11
Prove the trigonometric identity

Question 12
Differentiate 
Express your answer in positve powers.
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Question 13
The displacement of a moving body is given by 
Find the displacment, velocity and the acceleration of the body at t = 0 seconds
and t = 3.2 seconds
Question 14

Question 15
A body is travelling with a linear acceleration
. Find its
velocity and desplacement
given
What
is its desplacement when the velocity is 2m/s.
Question16
Simplify
expressing your answer in polar form.
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Question 17
If the current in an AC circuit is given by

find the amplitude, period and phase shift of the current. sketch the graph, showing
one complete cycle.
Question 18

Question 19

Question 20
Show that 