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  1. S

    Angle between tangents/line. Math P1.

    I need to know how to calculate the acute/obtuse angles between tangents to a curve or between a tangent and a line. Need urgent help with this. Questions like this can be found in past papers. N05Q9 And N08Q9. Help Help Help!!! :S
  2. S

    Help with functions.

    I'm really weak with functions and I usually can't understand the questions. Functions is the part of the syllabus the I have the most problems with. One of those problems is the 'completing square' method. If someone could explain to me how it's done I would be very grateful. Q) Express 4x^2...
  3. S

    Toughest P1 Math questions I came across. A little help...?

    So these are the toughest P1 questions I came across and I'm having a bit of trouble solving them. A little help would be greatly appreciated. NB: the '^' sign stands for 'raised to the power of'. Q1) Prove the identity. sin^2x [sin square x] - cos^2x [cos square x] tanx - 1...
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