CBSE Syllabus 2020-21 has been revised and reduced by 30% for 9th, 10th, 11th & 12th. Due to COVID-19 pandemic & nationwide lockdown, ongoing academic session is affected. After a thorough analysis of the situation and suggestions from experts & teachers, the Central Board of Secondary Education (CBSE) has been instructed by the HRD Ministry to reduce the syllabus. In response, after careful analysis and review, CBSE has cut 30% syllabus.
CHAPTER: TOPICS REMOVED
UNIT I-NUMBER SYSTEMS
REAL NUMBERS: Euclid’s division lemma
POLYNOMIALS : Statement and simple problems on division algorithmfor polynomials with real coefficients.
PAIR OF LINEAR EQUATIONS IN TWO VARIABLES : cross multiplication method
QUADRATIC EQUATIONS: Situational problems based on equations reducible to quadratic equations ARITHMETIC PROGRESSIONS: Application in solving daily life problems based on the sum to n terms
UNIT III-COORDINATE GEOMETRY
COORDINATE GEOMETRY: Area of a triangle.
TRIANGLES Proof of the following theorems are deleted : The ratio of the areas of two similar triangles is equal to the ratio of the squares of their corresponding sides. , In a triangle, if the square on one side is equal to sum
of the squares on the other two sides, the angle
opposite to the first side is a right angle.
CIRCLES No deletion
CONSTRUCTIONS: Construction of a triangle similar to a given triangle.
UNIT V- TRIGONOMETRY
INTRODUCTION TO TRIGONOMETRY: motivate the ratios whichever are defined at 0o and 90o.
TRIGONOMETRIC IDENTITIES: Trigonometric ratios of complementary angles.
HEIGHTS AND DISTANCES No deletion
AREAS RELATED TO CIRCLES: Problems on the central angle of 120°
SURFACE AREAS AND
VOLUMES: Frustum of a cone.
UNIT VII-STATISTICS & PROBABILITY
STATISTICS: Step deviation Method for finding the mean, Cumulative Frequency graph
PROBABILITY No deletion