NCERT/Class 10/Mathematics/Introduction to Trigonometry

Introduction to Trigonometry

Class 10 · Mathematics

77 questions36 easy28 medium13 hard

Sample Questions

Q1.If tan θ = 1, find θ (0° ≤ θ ≤ 90°).

  • A30°
  • B45°
  • C60°
  • D90°

Q2.Evaluate: sin²63° + sin²27° / (cos²17° + cos²73°).

  • A0
  • B2
  • C1
  • D1/2

Q3.What is the range of sin A for acute angle A?

  • A0 ≤ sin A ≤ 1
  • B−1 ≤ sin A ≤ 1
  • C0 < sin A < 1
  • D0 ≤ sin A < ∞

Q4.Prove: √(sec²A + cosec²A) = tan A + cot A. Square of RHS is:

  • Atan²A + 2 + cot²A = sec²A + cosec²A
  • Btan²A − cot²A
  • Csec²A − cosec²A
  • Dsec²A + cosec²A − 2

Q5.In a right triangle with hypotenuse 2 and one angle 30°, the side opposite to 30° is:

  • A1
  • B√3
  • C√2
  • D2√3

Q6.This is a sample question to preview what you'll get in the full practice test...

  • A. Option one
  • B. Option two
  • C. Option three
  • D. Option four
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Concepts Covered

Complementary anglesReciprocal ratiosStandard angle valuesTrigonometric identitiesTrigonometric ratios

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