#trigonometricratios #trigonometry #icsemaths #icseclass9 #icseclass9maths #jindalmathspoint #selinasolutions #onlinetuition #mathematics #math FOR ONLINE TUITION CONTACT ME AT 7009509669 Ch-22 Trigonometrical Ratios It seems like you are referring to Chapter 22, which likely involves trigonometrical ratios in a mathematics or trigonometry context. Trigonometric ratios are mathematical relationships between the angles and sides of triangles. The primary trigonometric ratios are sine (sin), cosine (cos), and tangent (tan), which are defined as follows: Sine (sin θ): In a right-angled triangle, the sine of an angle is the ratio of the length of the side opposite the angle to the length of the hypotenuse. sin(θ)= Hypotenuse Opposite side Cosine (cos θ): The cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse. cos Adjacent side Hypotenuse cos(θ)= Hypotenuse Adjacent side Tangent (tan θ): The tangent of an angle is the ratio of the length of the side opposite the angle to the length of the adjacent side. tan Opposite side Adjacent side tan(θ)= Adjacent side Opposite side These ratios are fundamental in trigonometry and are widely used to solve problems involving triangles and periodic phenomena. FOR ONLINE TUITION CONTACT ME AT 7009509669 THANKS FOR YOUR SUPPORT AND HELP LIKE SUBSCRIBE AND SHARE FOR MORE UPDATES @jindalmathspoint