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Important Questions

Complementary Angles

ICSE · Class 9 · Mathematics

Most important questions from Complementary Angles for ICSE Class 9 Mathematics board exam 2026. MCQs, short answer, and long answer questions with marks.

44 questions22 flashcards5 concepts

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An illustration showing two acute angles whose sum is 90 degrees, defining them as complementary angles. Examples like 30 and 60 degrees, and a general case with x and (90-x) degrees.
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44 Questions·
multiple choicemultiple correcttext answer

Sample Questions

1multiple choice

What is the value of sin 30° + cos 60°?

2multiple correct

Which of the following are equal to tan 40°?

3multiple choice

Calculate the value of cos 35° × sec 55°:

4multiple choice

If sin 2A = cos 38°, find the value of A:

+40 more questions available

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Frequently Asked Questions

What are the important topics in Complementary Angles for ICSE Class 9 Mathematics?
Complementary Angles covers several key topics that are frequently asked in ICSE Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Complementary Angles — ICSE Class 9 Mathematics?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.
How many important questions are there in Complementary Angles?
There are 44 practice questions available for Complementary Angles. These cover multiple question types including MCQs, short answer, and long answer questions.

Sources & Official References

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

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