exam
Maths Puzzle
Numerical Ability
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)
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exam Other Question
Find the center and the radius of the circle whose equation is given: x^2+y^2+6x+8=0
Center = (_,_) Radius = _
write in standard form. state wheather the graph is a parabola, circle,ellipse, or hyperbola. and graph the equation...?
6x^2+ 6y^2=162