Selina Concise Mathematics Class 9 ICSE Solutions Complementary AnglesICSE SolutionsSelina ICSE SolutionsAPlusTopper.com provides step by step solutions for Selina Concise Mathematics Class 9 ICSE Solutions Chapter 25 Complementary Angles. You can downlo…

What Are The Different Types Of AnglesAngle: Two rays with a common end point form an angle. OA, OB are rays & O is end point.Types of Angles In geometry, angles can be classified according to the size (or magnitude) of the angle. Right angle: An ang…

Trigonometric Ratios Of Complementary Angles We know Trigonometric ratios of complementary angles are pair of angles whose sum is 90° Like 40°, 50°, 60°, 30°, 20°, 70°, 15°, 75° ; etc, Formulae: sin (90° – θ) = cos θ,         cot (90° – θ) = tanθ cos (…