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Important Questions

Ch 03 -Trigonometric Functions

ICSE · Class 11 · Mathematics

Most important questions from Ch 03 -Trigonometric Functions for ICSE Class 11 Mathematics board exam 2026. MCQs, short answer, and long answer questions with marks.

103 questions36 flashcards5 concepts

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103 Questions·
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Sample Questions

1multiple choice

What is tan 45°?

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1

tan 45° = sin45°/cos45° = (1/√2)/(1/√2) = 1.

2multiple choice

sin²x + cos²x equals:

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1

sin²x + cos²x = 1 is the fundamental Pythagorean identity, derived from the unit circle equation x²+y²=1.

3multiple choice

The period of the function sin x is:

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2π

sin x has period 2π (one full revolution on the unit circle). tan x has period π.

4multiple choice

The period of the function tan x is:

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π

tan x has period π because tan(π+x)=tanx. sin and cos have period 2π.

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Frequently Asked Questions

What are the important topics in Ch 03 -Trigonometric Functions for ICSE Class 11 Mathematics?
Key topics in Ch 03 -Trigonometric Functions include Complete Overview of Trigonometric Functions - Chapter 3, Trigonometric Functions - Concept Map, Trigonometric Functions - Complete Concept Map. These are the concepts ICSE Class 11 examiners draw on most — study them first, then practise related questions.
How to score full marks in Ch 03 -Trigonometric Functions — ICSE Class 11 Mathematics?
Understand the core concepts first, then work through the 103 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Ch 03 -Trigonometric Functions?
There are 103 practice questions available for Ch 03 -Trigonometric Functions. These cover multiple question types including MCQs, short answer, and long answer questions.

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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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