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### Lecture 15: Trigonometry Part 15

00:49:39

Published    09-Jan-2019      Bilingual

## TRIGONOMETRICS FUNCTIONS - MATHEMATICS CBSE CLASS 11TH

Study Khazana delivers CBSE Class 11th Maths, fifteen video lectures on Trigonometric Functions with complete solutions using sample paper based on NCERT Syllabus. This chapter covers the following topic to make students understand the topic

## WHAT DO YOU STUDY IN TRIGONOMETRICS FUNCTIONS?

• Positive and negative angles
• Measuring angles in radians and in degrees and conversion of one into other
• Definition of trigonometric functions with the help of unit circle
• Truth of the sin2x + cos2x = 1, for all x
• Signs of trigonometric functions
• Domain and range of trigonometric functions and their graphs
• Expressing sin (x±y) and cos (x±y) in terms of sinx, siny, cosx & cosy and their simple application
• Identities related to sin 2x, cos2x, tan 2x, sin3x, cos3x and tan3x
• General solution of trigonometric equations of the type sin y = sin a, cos y = cos a and tan y = tan a.

## HOW WE HELP THE STUDENTS???

These video lectures will make the subject easy for students. The free lecture is available as a demo. We provide mock exams after completion of the full course. These lectures are recording of the live session taken. It will include question and answers of the students undertaken during the class. CBSE Class 11th previous question papers and sample papers are also given to the students for practice. Video Lectures classes are taken by Study Khazana’s best faculties. We offer pen drives and online-offline study mode to the students. We also have Android and IOS Study Khazana mobile app for helping students to study anywhere at any time.

#### Gurpreet Singh

 Phone: 09********90 Email: gse********@gmail.com Address: B-253A Street No -3 Majis Park Adarsh Nagar Delhi -110033 Institute: G.S Education

Teaching from last 19 years