exam
Maths Puzzle
Numerical Ability
Brad is nine more than two times as old as Ben. In 15 years the sum of their ages will be 96. How old is Brad now?
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exam Other Question
a.(1-tan^2u)/(1+tan^2u)=cos(2u)
I think this is a half angle identity?verify the identity.
b. compare the graphs of y1=(1-tan^2u)/(1+tan^2u) and y2=cos(2u)
Write an equation of the line containing the given point and parallel to the given line. Express you answer in the form y=mx+b
(8,9); 9x+y=6