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← CBSE Class 12

Inverse Trigonometric Functions

Board: CBSE Class: 12

Chapter Overview

Inverse trigonometric functions sin^-1(x), cos^-1(x), tan^-1(x), etc. have restricted ranges to ensure single-valued outputs. The chapter covers principal value branches, properties including sin^-1(x) + cos^-1(x) = pi/2, and conversion between inverse functions.

Topics Covered

  • Principal Values
  • Domain and Range
  • Properties of Inverse Trig
  • Sum and Difference Formulas
  • Conversion Between Functions

Key Formulas

sin^-1(x) + cos^-1(x) = pi/2
tan^-1(x) + tan^-1(y) = tan^-1((x+y)/(1-xy))
sin^-1(sin A) = A only when A in [-pi/2, pi/2]

Real-World Applications

Applications: Navigation, integration techniques, solving trigonometric equations in physics.

Study Tips

Tip: Memorize principal value ranges
Tip: Practice graph sketching
Tip: Learn conversion formulas