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Introduction to Trigonometry

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

Trigonometric Ratios

Subtopic

Trigonometric Ratios under Introduction to Trigonometry for Grade 10 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    If sin⁡θ=xy\sin \theta = \frac{x}{y}, then cosec⁡θ\operatorname{cosec} \theta is equal to:

    A.

    yx\frac{y}{x}

    B.

    x2y2\frac{x^2}{y^2}

    C.

    y2−x2\sqrt{y^2 - x^2}

    D.

    xy\frac{x}{y}

  2. 2.

    The value of cot⁡90∘\cot 90^\circ is:

    A.

    00

    B.

    11

    C.

    Not defined

    D.

    3\sqrt{3}

  3. 3.

    In a right-angled triangle ABCABC with ∠B=90∘\angle B = 90^\circ, according to Pythagoras theorem, AC2AC^2 is equal to:

    A.

    AB2−BC2AB^2 - BC^2

    B.

    BC2−AB2BC^2 - AB^2

    C.

    AB2+BC2AB^2 + BC^2

    D.

    AB+BCAB + BC

Download the worksheet for Introduction to Trigonometry - Trigonometric Ratios to practice offline. It includes additional chapter-level practice questions.

Trigonometric Ratios of Specific Angles (0°, 30°, 45°, 60°, 90°)

Subtopic

Trigonometric Ratios of Specific Angles (0°, 30°, 45°, 60°, 90°) under Introduction to Trigonometry for Grade 10 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The value of 12cosec 45∘\frac{1}{\sqrt{2}} \text{cosec } 45^\circ is:

    A.

    11

    B.

    12\frac{1}{2}

    C.

    2\sqrt{2}

    D.

    22

  2. 2.

    Evaluate: sin⁡260∘−cos⁡260∘\sin^2 60^\circ - \cos^2 60^\circ.

    A.

    12\frac{1}{2}

    B.

    11

    C.

    00

    D.

    14\frac{1}{4}

  3. 3.

    Find the value of cos⁡90∘/sin⁡90∘\cos 90^\circ / \sin 90^\circ.

    A.

    11

    B.

    Not defined

    C.

    00

    D.

    12\frac{1}{2}

Download the worksheet for Introduction to Trigonometry - Trigonometric Ratios of Specific Angles (0°, 30°, 45°, 60°, 90°) to practice offline. It includes additional chapter-level practice questions.

Trigonometric Identities (sin²A + cos²A = 1)

Subtopic

Trigonometric Identities (sin²A + cos²A = 1) under Introduction to Trigonometry for Grade 10 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Find the value of xx if x+sin⁡2ϕ+cos⁡2ϕ=10x + \sin^2 \phi + \cos^2 \phi = 10.

    A.

    10

    B.

    11

    C.

    9

    D.

    1

  2. 2.

    What is the result of (sin⁡2A+cos⁡2A)−sin⁡2A(\sin^2 A + \cos^2 A) - \sin^2 A?

    A.

    sin⁡2A\sin^2 A

    B.

    cos⁡2A\cos^2 A

    C.

    1

    D.

    0

  3. 3.

    If sin⁡2θ=1−m\sin^2 \theta = 1 - m, then cos⁡2θ\cos^2 \theta is:

    A.

    1

    B.

    m

    C.

    1 - m

    D.

    0

Download the worksheet for Introduction to Trigonometry - Trigonometric Identities (sin²A + cos²A = 1) to practice offline. It includes additional chapter-level practice questions.

Introduction to Trigonometry - Class 10 Maths (CBSE) | Krit.club