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Trigonometric Functions

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Angles: Degree and Radian Measure

Subtopic

Angles: Degree and Radian Measure under Trigonometric Functions for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The interior angle of a regular hexagon, in radian measure, is:

    A.

    ΀3\frac{\pi}{3}

    B.

    2Ī€3\frac{2\pi}{3}

    C.

    3Ī€4\frac{3\pi}{4}

    D.

    5Ī€6\frac{5\pi}{6}

  2. 2.

    What is the radian measure of each interior angle of an equilateral triangle?

    A.

    ΀6\frac{\pi}{6}

    B.

    ΀4\frac{\pi}{4}

    C.

    ΀3\frac{\pi}{3}

    D.

    ΀2\frac{\pi}{2}

  3. 3.

    The sum of the interior angles of a triangle in radian measure is:

    A.

    2Ī€2\pi

    B.

    ΀2\frac{\pi}{2}

    C.

    ΀\pi

    D.

    3Ī€2\frac{3\pi}{2}

Download the worksheet for Trigonometric Functions - Angles: Degree and Radian Measure to practice offline. It includes additional chapter-level practice questions.

Trigonometric Functions and Signs

Subtopic

Trigonometric Functions and Signs under Trigonometric Functions for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following functions is undefined at x=90∘x = 90^\circ?

    A.

    sin⁥x\sin x

    B.

    cos⁥x\cos x

    C.

    tan⁥x\tan x

    D.

    csc⁥x\csc x

  2. 2.

    Convert 5Ī€6\frac{5\pi}{6} radians into degrees.

    A.

    150∘150^\circ

    B.

    120∘120^\circ

    C.

    135∘135^\circ

    D.

    160∘160^\circ

  3. 3.

    The value of cos⁥(360∘)\cos(360^\circ) is:

    A.

    00

    B.

    11

    C.

    −1-1

    D.

    12\frac{1}{2}

Download the worksheet for Trigonometric Functions - Trigonometric Functions and Signs to practice offline. It includes additional chapter-level practice questions.

Domain and Range of Trigonometric Functions

Subtopic

Domain and Range of Trigonometric Functions under Trigonometric Functions for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The range of f(x)=1+tan⁥2xf(x) = 1 + \tan^2 x is:

    A.

    (1,∞)(1, \infty)

    B.

    [1,∞)[1, \infty)

    C.

    [0,∞)[0, \infty)

    D.

    (−∞,∞)(-\infty, \infty)

  2. 2.

    The domain of f(x)=sec⁥(x+Ī€)f(x) = \sec(x + \pi) is the same as the domain of:

    A.

    tan⁥x\tan x

    B.

    cot⁥x\cot x

    C.

    csc⁥x\csc x

    D.

    cos⁥x\cos x

  3. 3.

    What is the domain of f(x)=sin⁥2x+cos⁥2xf(x) = \sqrt{\sin^2 x + \cos^2 x}?

    A.

    {1}\{1\}

    B.

    {x∈R}\{x \in \mathbb{R}\}

    C.

    [0,∞)[0, \infty)

    D.

    [−1,1][-1, 1]

Download the worksheet for Trigonometric Functions - Domain and Range of Trigonometric Functions to practice offline. It includes additional chapter-level practice questions.

Trigonometric Functions of Sum and Difference of Two Angles

Subtopic

Trigonometric Functions of Sum and Difference of Two Angles under Trigonometric Functions for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The expansion of cos⁥(xâˆ’Ī€3)\cos(x - \frac{\pi}{3}) is:

    A.

    12cos⁥x+32sin⁥x\frac{1}{2}\cos x + \frac{\sqrt{3}}{2}\sin x

    B.

    12cos⁡x−32sin⁡x\frac{1}{2}\cos x - \frac{\sqrt{3}}{2}\sin x

    C.

    32cos⁥x+12sin⁥x\frac{\sqrt{3}}{2}\cos x + \frac{1}{2}\sin x

    D.

    32cos⁡x−12sin⁡x\frac{\sqrt{3}}{2}\cos x - \frac{1}{2}\sin x

  2. 2.

    Simplify the expression sin⁥(x+30∘)+cos⁥(x+60∘)\sin(x + 30^\circ) + \cos(x + 60^\circ).

    A.

    sin⁥x\sin x

    B.

    cos⁥x\cos x

    C.

    3sin⁥x\sqrt{3}\sin x

    D.

    3cos⁥x\sqrt{3}\cos x

  3. 3.

    The value of sin⁥165∘\sin 165^\circ is:

    A.

    3+122\frac{\sqrt{3}+1}{2\sqrt{2}}

    B.

    1−322\frac{1-\sqrt{3}}{2\sqrt{2}}

    C.

    3−122\frac{\sqrt{3}-1}{2\sqrt{2}}

    D.

    −3−122-\frac{\sqrt{3}-1}{2\sqrt{2}}

Download the worksheet for Trigonometric Functions - Trigonometric Functions of Sum and Difference of Two Angles to practice offline. It includes additional chapter-level practice questions.

Trigonometric Equations

Subtopic

Trigonometric Equations under Trigonometric Functions for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Find the general solution of the equation tan⁥x3=0\tan \frac{x}{3} = 0.

    A.

    x=n΀x = n\pi

    B.

    x=3n΀x = 3n\pi

    C.

    x=n΀3x = \frac{n\pi}{3}

    D.

    x=(2n+1)3Ī€2x = (2n+1)\frac{3\pi}{2}

  2. 2.

    The general solution of csc⁡x=−2\csc x = -\sqrt{2} is:

    A.

    x=nĪ€+(−1)n5Ī€4x = n\pi + (-1)^n \frac{5\pi}{4}

    B.

    x=2nĪ€Âą3Ī€4x = 2n\pi \pm \frac{3\pi}{4}

    C.

    x=nĪ€+(−1)n3Ī€4x = n\pi + (-1)^n \frac{3\pi}{4}

    D.

    x=nĪ€âˆ’Ī€4x = n\pi - \frac{\pi}{4}

  3. 3.

    Solve sec⁡x=−23\sec x = -\frac{2}{\sqrt{3}} for the general solution.

    A.

    x=2nĪ€ÂąĪ€6x = 2n\pi \pm \frac{\pi}{6}

    B.

    x=2nĪ€Âą5Ī€6x = 2n\pi \pm \frac{5\pi}{6}

    C.

    x=nĪ€+(−1)n5Ī€6x = n\pi + (-1)^n \frac{5\pi}{6}

    D.

    x=2nĪ€Âą7Ī€6x = 2n\pi \pm \frac{7\pi}{6}

Download the worksheet for Trigonometric Functions - Trigonometric Equations to practice offline. It includes additional chapter-level practice questions.

Trigonometric Functions - Class 11 Maths (CBSE) | Krit.club