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CBSE Class 10 Introduction to Trigonometry — practice questions — page 4

Explore 131 free Introduction to Trigonometry questions in CBSE Class 10 Mathematics. Open each question or exercise to read its content, reference answers and available explanation.

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Introduction to Trigonometry questions and exercises with answers

Showing questions 91–120 of 131.

Values at special anglesRead the answer and worked solution →True or false about trigonometryRead the answer and worked solution →Basic or reciprocal ratio?Read the answer and worked solution →Complete the identityRead the answer and worked solution →Pick the valueRead the answer and worked solution →Spot the odd one outRead the answer and worked solution →Trigonometry bingoRead the answer and worked solution →In the word trigonometry, the Greek root 'tri' means:Read the answer and worked solution →In the word trigonometry, the Greek root 'gon' means:Read the answer and worked solution →In the word trigonometry, the Greek root 'metron' means:Read the answer and worked solution →Trigonometry studies the relationships between the sides and the:Read the answer and worked solution →The word trigonometry is derived from words that are:Read the answer and worked solution →Trigonometry lets a student find the height of the Qutub Minar without:Read the answer and worked solution →In right triangle ABC with the right angle at B, the side opposite angle A is:Read the answer and worked solution →In right triangle ABC with the right angle at B, the side AC is the:Read the answer and worked solution →The side AB, which forms part of angle A, is called the side:Read the answer and worked solution →When angle C is considered in place of angle A, the positions of the sides:Read the answer and worked solution →Ratios involving the sides of a right triangle are called:Read the answer and worked solution →The abbreviation cosec A stands for:Read the answer and worked solution →cosec A, sec A and cot A are the ___ of sin A, cos A and tan A.Read the answer and worked solution →Trigonometric ratios of an acute angle relate the angle to the:Read the answer and worked solution →The first use of the idea of sine in its modern sense was in the:Read the answer and worked solution →Aryabhata's work on sine dates to about:Read the answer and worked solution →Aryabhata's word for sine was:Read the answer and worked solution →An equation true for all values of the variables involved is called an:Read the answer and worked solution →A trigonometric identity holds for all values of the:Read the answer and worked solution →cos squared A plus sin squared A equals:Read the answer and worked solution →Dividing AB squared plus BC squared equals AC squared by which term gives cos squared A plus sin squared A equals 1?Read the answer and worked solution →In a right triangle with BC equal to AB equal to a, the hypotenuse AC equals:Read the answer and worked solution →True or false on trigonometry basicsRead the answer and worked solution →

Worked practice questions

Values at special angles

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Questions
  1. Answer
    1
    Question
    Value of tan 45 degrees
  2. Answer
    2
    Question
    Value of cosec 30 degrees
  3. Answer
    1
    Question
    Value of sec2 A minus tan2 A
  4. Answer
    5
    Question
    Hypotenuse when the legs are 3k and 4k, in units of k
Instructions
Type the number only.
_Source: syllabus Mathematics, Ch 8 'Introduction to Trigonometry'_

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True or false about trigonometry

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Questions
  1. Statement is true
    Yes
    Statement
    cosec A is the reciprocal of sin A.
  2. Statement is true
    No
    Statement
    cos A means cos multiplied by A.
  3. Statement is true
    Yes
    Statement
    sin squared A plus cos squared A equals 1.
  4. Statement is true
    Yes
    Statement
    Trigonometric ratios need a right triangle.
  5. Statement is true
    No
    Statement
    An identity holds only for one angle.
Instructions
Decide whether each statement is true or false.
_Source: syllabus Mathematics, Ch 8 'Introduction to Trigonometry'_

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Basic or reciprocal ratio?

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Left
Basic
Items
  1. Item
    sin A
    Answer
    Basic
  2. Item
    cos A
    Answer
    Basic
  3. Item
    tan A
    Answer
    Basic
  4. Item
    cosec A
    Answer
    Reciprocal
  5. Item
    sec A
    Answer
    Reciprocal
  6. Item
    cot A
    Answer
    Reciprocal
Right
Reciprocal
Instructions
Swipe left for a basic ratio, right for a reciprocal one.
_Source: syllabus Mathematics, Ch 8 'Introduction to Trigonometry'_

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