Strategy 1 - Identify the form first: Determine if the hyperbola is standard, conjugate, rectangular, or shifted. The rectangular hyperbola xy = has its own set of parametric formulas that are much simpler. Converting to the appropriate form saves significant computation.
Strategy 2 - Use parametric equations for curve-point problems: When dealing with tangent, normal, chord, or locus problems, parametric representation (asec(theta), btan(theta)) or (ct, c/t) for rectangular hyperbola makes algebra manageable. The parameter also helps in applying cyclic point conditions.
Strategy 3 - Asymptote relationships: The equation of a conic sharing asymptotes with / - / = 1 is / - / = k. Use this to find the conjugate hyperbola (k = -1) or to construct a hyperbola passing through a given point.
Strategy 4 - Comparison with ellipse: Most hyperbola formulas mirror ellipse formulas with sign changes. Key differences: = + (not - ), tangent condition has minus ( - not + ), and director circle has minus ( - not + ).
Strategy 5 - Common tangent problems: Finding common tangents to two conics (e.g., hyperbola and ellipse, or hyperbola and parabola) requires equating the tangent condition from both conics to find common values of m and c.
Strategy 6 - Eccentricity relationships: For conjugate hyperbolas, 1/ + 1/e'^2 = 1. For confocal conics (same foci), the tangent at their intersection point is perpendicular.
JEE typically tests: tangent/normal equations, asymptote properties, eccentricity problems, and rectangular hyperbola problems involving concyclic points.