CBSE 10 Math · U5

Trigonometry

CBSE Class 10 Mathematics Unit V: trigonometric ratios in right triangles, standard values for 0, 30, 45, 60 and 90 degrees where defined, simple identities based on sin^2 A + cos^2 A = 1, and height-distance applications with at most two right triangles.

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A focused, distraction-free run through 70 multiple-choice questions. Hints if you need them; your score at the end.

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Difficulty guide

The label describes the problem, not your ability.

1/5 - Foundational

Warm-up setup; checks one basic idea.

2/5 - Routine exam skill

Normal syllabus skill; usually one main rule or interpretation.

3/5 - Standard multi-step

Exam-style problem with multiple steps or a common trap.

4/5 - Hard exam skill

High-end exam problem; combines methods carefully.

5/5 - Challenge

Stretch problem beyond normal exam pressure.

Topic 5.1

Trigonometric Ratios in Right Triangles

Identifying opposite, adjacent and hypotenuse sides and forming the six trigonometric ratios for acute angles.

Topic 5.2

Standard Angles and Exact Values

Using the exact values of trigonometric ratios for 30, 45 and 60 degrees.

Topic 5.3

Trigonometric Identities

Applying sin^2 A + cos^2 A = 1 and its simple consequences.

Topic 5.4

Heights and Distances: One Right Triangle

Solving single-triangle angle of elevation and angle of depression problems.

Topic 5.5

Heights and Distances: Two Right Triangles

Board-style applications involving two observations, angle changes, and combined right-triangle equations.

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