Trigonometry: Functions, Ratios, and Formulas
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Questions and Answers

What is the study of the relationship between the sides and angles of a right-angled triangle called?

  • Trigonometry (correct)
  • Calculus
  • Algebra
  • Geometry

    • Who is the Greek mathematician credited with giving the concept of trigonometry?

  • Archimedes
  • Hipparchus (correct)
  • Euclid
  • Pythagoras

    • In trigonometry, the angles can be measured in which units?

  • Kilograms
  • Liters
  • Degrees (correct)
  • Miles

    • Which branch of mathematics finds huge application in diverse fields?

    <p>Trigonometry</p> Signup and view all the answers

    What are some of the most commonly used trigonometric angles for calculations?

    <p>30°, 60°, 90°, 120°</p> Signup and view all the answers

    What does trigonometry help to find for a right triangle?

    <p>Missing or unknown angles or sides</p> Signup and view all the answers

    What are the three important trigonometric functions?

    <p>Sine, cosine, tangent</p> Signup and view all the answers

    Which trigonometric functions are considered odd?

    <p>Sine, tangent</p> Signup and view all the answers

    What is the definition of an even trigonometric function?

    <p>f(-x) = f(x) and symmetric to the y-axis</p> Signup and view all the answers

    Which angles are commonly used in trigonometry problems?

    <p>30°, 45°, 90°</p> Signup and view all the answers

    How are the trigonometric ratios of an angle defined?

    <p>$\theta = sin^{-1} (P/H)$</p> Signup and view all the answers

    What does the unit circle help us measure directly?

    <p>$sin$, $cos$, and $tan$</p> Signup and view all the answers

    How many sides does a right-angled triangle have?

    <p>Three sides</p> Signup and view all the answers

    What are the abbreviations for the three important trigonometric functions?

    <p>$sin$, $cos$, $tan$</p> Signup and view all the answers

    What is necessary to define the set of important trigonometric functions?

    <p>$Knowledge$ about the sides of the right triangle</p> Signup and view all the answers

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