exam
Maths Puzzle
Numerical Ability
what is a multiplicative inverse?
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exam Other Question
the question says use the diagram to solve for x
the equation is 42=3x+y and y=x+2
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)