*The tangent at point 'θ' is x sec θ/a–y tan θ/b =1. • The straight line y = mx + c is a tangent to the curve, if c2 = a2 m2 – b2. In other words, y = mx+ √a2m2–b2 touches the curve for all those values of m when m > b/a or m < –b/a.*

**Author**: V&S EDITORIAL BOARD

**Publisher:** V&S Publishers

**ISBN:** 9789352150601

**Category:** Education

**Page:** 352

**View:** 814