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FOURTH QUARTER REVIEWER FOR GRADE 9 LEARNERS - TRIGONOMETRY

Quiz by Raphael Perez

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20 questions
Show answers
  • Q1
    20s
  • Q2
    20s
  • Q3
    What is the formula for the tangent value of any acute angle of a right triangle?
    $\frac{adjacent\ side}{hypotenuse}$
    $\frac{adjacent\ side}{opposite\ side}$
    $\frac{opposite\ side}{adjacent\ side}$
    $\frac{opposite\ side}{hypotenuse}$
    30s
  • Q4
    Which of the following ratio is equal to the cosecant function?
    $\frac{hypotenuse}{opposite\ side}$
    $\frac{adjacent\ side}{hypotenuse}$
    $\frac{adjacent\ side}{hypotenuse}$
    $\frac{opposite\ side}{hypotenuse}$
    30s
  • Q5
    Which of the following is the reciprocal of cosine?
    secant
    sine
    cotangent
    cosecant
    20s
  • Q6
    In right triangle ABC where C is the right angle, which of the following is true?
    Question Image
    $\tan A=\cot A$
    $\sin A=\cos B$
    $\tan B=\cot B$
    $\sin A=\csc B$
    45s
  • Q7
    Which of the following is equivalent to cos F?
    Question Image
    $\frac{3}{5}$
    $\frac{4}{5}$
    $\frac{5}{3}$
    $\frac{5}{4}$
    30s
  • Q8
    Which of the following is equivalent to csc D?
    Question Image
    $\frac{5}{3}$
    $\frac{4}{5}$
    $\frac{5}{4}$
    $\frac{3}{5}$
    30s
  • Q9
    Question Image
    30s
  • Q10
    Which expression has the same value as sec F?
    Question Image
    $\cos D$
    $\csc D$
    $\cos F$
    $\csc F$
    30s
  • Q11
    Which of the following is the value of sin 30°?
    $\frac{\sqrt{2}}{2}$
    $\frac{\sqrt{3}}{3}$
    $\frac{2\sqrt{3}}{3}$
    $\frac{1}{2}$
    30s
  • Q12
    What is the value of tan 30°?
    $\frac{\sqrt{2}}{2}$
    $\frac{\sqrt{3}}{2}$
    $\frac{\sqrt{3}}{3}$
    $\frac{2}{3}\sqrt{3}$
    30s
  • Q13
    What is cos 45°?
    $\frac{\sqrt{2}}{2}$
    $\frac{\sqrt{3}}{2}$
    $\frac{2}{3}\sqrt{3}$
    $\frac{\sqrt{3}}{3}$
    30s
  • Q14
    In triangle ABC, C is the biggest angle, what is the formula in getting side "c"? Where sides a and b and angle C are given?
    $c=\sqrt{a^2-b^2+2ab\cos C}$
    $c=\sqrt{a^2+b^2+2ab\cos C}$
    $c=\sqrt{a^2-b^2-2ab\cos C}$
    $c=\sqrt{a^2+b^2-2ab\cos C}$
    30s
  • Q15
    Which equation will be used to find the length of x?
    Question Image
    $x^2=10^2-9^2-2\left(10\right)\left(9\right)\cos45\degree$
    $x^2=10^2-9^2+2\left(10\right)\left(9\right)\cos45\degree$
    $x^2=10^2+9^2+2\left(10\right)\left(9\right)\cos45\degree$
    $x^2=10^2+9^2-2\left(10\right)\left(9\right)\cos45\degree$
    30s

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