Tamil Nadu Class 10 Maths Unit Test 3 - Trigonometry and Mensuration

Test Setup

• Suggested marks: 40
• Suggested time: 75 minutes
• Chapters: Trigonometry and Mensuration
• Rule: Draw diagrams for word problems and write units for mensuration.

Part A - One Mark

• Write sin theta as a ratio.
• Write tan theta as a ratio.
• Write sin^2 theta + cos^2 theta.
• Write the volume formula of a cone.
• Write the surface area formula of a sphere.

Part B - Two Marks

• Find a trigonometric ratio from a right triangle.
• Simplify a basic trigonometric expression.
• Find curved surface area of a cylinder.
• Find volume of a cone.
• Identify whether a question asks for area or volume.

Part C - Five Marks

• Prove a trigonometric identity.
• Solve a height and distance problem with diagram.
• Solve a combined solid mensuration problem.
• Solve a melted-and-recast volume problem.

Correction Checklist

• Did I choose the correct trigonometric ratio?
• Did I start identity proof from one side only?
• Did I convert all units before solving?
• Did I include only visible surfaces?
• Did I write square units or cubic units correctly?