TRIGONOMETRY

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DIRECTION:

» Read each question carefully and choose the letter that corresponds to the correct answer. Write the letter of your answer on the space provided before the number.

1) What trigonometric ratio corresponds to the ratio of the side opposite an acute angle in a right triangle to its hypotenuse?

• ANSWER: A. Sine

2) In ∆SUN, ∠U is a right angle. Which side of the triangle is the hypotenuse?

• ANSWER: C. SN

3) Which of these trigonometric ratios is the reciprocal of sec θ?

• ANSWER: B. cos θ

4) In ∆FGH, m∠G = 90°, FG = 7cm, GH = 24cm, and FH = 25cm. Which of the following ratios represent tan H?

• ANSWER: C. 7/24

5) Which of the following statements is INCORRECT?

• ANSWER: C. sec N = 4/5

6) What trigonometric ratio corresponds to the ratio of the side adjacent to the acute angle in a right triangle to the side opposite to it.

• ANSWER: D. Cotangent

7) Given ∆SUN where ∠U is a right angle; which side is opposite to angle S?

• ANSWER: B. UN

8) In ∆SCI, m∠I = 90°, SI = 20cm, IC = 21cm, and SC = 29cm. Which of the following ratios represents sin S?

• ANSWER: A. 21/29

9) Which of the following statements is CORRECT?

• ANSWER: A. sin Z = 12/13

10) Referring to the same figure in Item No. 9, what is the value of cot Z?

• ANSWER: D. 5/12

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