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RD Sharma Solutions for Class 11 Maths Chapter 4: Measurement of Angles

Trigonometry is a branch of mathematics that is very crucial in the calculation portion of geometry. It particularly helps figure out a triangle's sides and angles and problems involving angles. We mainly hear about the relationship between degrees, radians, and real numbers in this chapter.

Angle is a measurement of how much a ray rotates from its origin. The initial side of the angle is the main ray, and the terminal side is the ray's final position after rotation. The vertex is the pivotal point of rotation. The angle is positive if the rotation is anticlockwise and negative if the rotation is clockwise.

A radian is an angle formed by an arc subtended at the centre of a circle, having its length equal to the circle's radius. Thus, one radian is equal to 180/π degree. For acute angles, trigonometric ratios are known as the ratio of the sides of a right-angled triangle. Trigonometric functions are the extension of trigonometric ratios to any angle in terms of radian measure (real number).

One exercise is included in Chapter 4- Angle Measurement, and the RD Sharma Solutions on this page offers answers to the questions in this exercise. Angles are an important part of geometry. Angle-measuring systems are a kind of angle-measuring system. The sexagesimal scheme is used to calculate time and angles, that is, having its denominator equal to the power of sixty. The metric system is based on the centesimal system. A structure that is in a circle. The relationship between radians and degrees. The radian-to-real-numbers relationship. The relationship of three angle measurement systems.

The chapter uses various tools to measure the angles and convert degrees into radian and vice versa. The RD Sharma Class 11 Solutions are created by expert tutors to assist students in gaining more awareness and developing a good and sound knowledge about the subject. Students are encouraged to exercise the solutions daily to pass their tests with flying colours.


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  • The RD Sharma Solutions for Class 11th Maths include all the answers to exercise- based questions. Our goal is to ensure you have the best quality solutions, along with step-by-step explanations.

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