Gr 10 Math Ch 4: Special Angles
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Questions and Answers

What is the value of sin 30°?

  • $ oot{2}{2}$
  • $ oot{3}{6}$
  • $1/2$ (correct)
  • $ oot{3}{3}$

    • In a 45°-45°-90° triangle, what is the length of the hypotenuse?

  • $ oot{2}{2}$
  • $ oot{2}$ (correct)
  • $2$
  • $1$

    • Which of the following values corresponds to cos 60°?

  • $ oot{3}{3}$
  • $ oot{2}{2}$
  • $1/2$ (correct)
  • $ oot{3}{2}$

    • What is the value of tan 45°?

    <p>$1$</p> Signup and view all the answers

    In a 30°-60°-90° triangle, what is the length of the side opposite the 60° angle?

    <p>$ oot{3}$</p> Signup and view all the answers

    Which trigonometric ratio corresponds to sin 60°?

    <p>$ oot{3}{2}$</p> Signup and view all the answers

    What is the cosine of 30°?

    <p>√3/2</p> Signup and view all the answers

    In a 30°-60°-90° triangle, what is the ratio of the side opposite the 30° angle to the hypotenuse?

    <p>1:2</p> Signup and view all the answers

    What is the sine of 45°?

    <p>√2/2</p> Signup and view all the answers

    What is true about the tangent of 60°?

    <p>It equals √3</p> Signup and view all the answers

    In a 45°-45°-90° triangle, what is the length of the sides opposite the 45° angles?

    <p>1</p> Signup and view all the answers

    What is the sine of 60°?

    <p>√3/2</p> Signup and view all the answers

    What is the relationship between the lengths of the sides in a 30°-60°-90° triangle?

    <p>The side opposite the 30° angle is half the length of the hypotenuse.</p> Signup and view all the answers

    Which of the following represents the tangent of 30°?

    <p>1/√3</p> Signup and view all the answers

    In a right triangle with angles 30° and 60°, which ratio correctly expresses sin 60°?

    <p>√3/2</p> Signup and view all the answers

    What is the value of cos 45° expressed in simplest terms?

    <p>√2/2</p> Signup and view all the answers

    What is true about the lengths of the sides in a 45°-45°-90° triangle?

    <p>Both legs have equal lengths.</p> Signup and view all the answers

    Which statement about the trigonometric ratios for special angles is correct?

    <p>The cosine of 30° is equal to the sine of 60°.</p> Signup and view all the answers

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