Trigonometric Functions — Important Questions
CBSE · Class 11 · Mathematics
160 important questions from Trigonometric Functions for CBSE Class 11 Mathematics, with answers. Part of the CBSE Class 11 Mathematics syllabus.
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Important Questions from Trigonometric Functions
In which quadrant is tan(x) positive?
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First Quadrant, Third Quadrant
tan(x) is positive in the first and third quadrants where sine and cosine have the same sign.
What is cos(-x)?
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cos(x)
The cosine function is an even function, so cos(-x) equals cos(x).
What is the radian measure of a complete revolution?
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2π
A complete revolution around a circle is 2π radians, which is equivalent to 360 degrees.
What is sin(π/2)?
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1
At π/2 radians (90 degrees), the sine function has a value of 1.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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