Trigonometric functions

posted by .

1)I have a right triangle. the hypotenuse is 7 the opposite leg is x and an angle is 32.

Which equation can be used to find x?
A)sin32=x/7
B)cot32=7/x
C)tan32=x/7
D)cos32=x/7
I chose D

2)A right triangle 26 is the hypotenuse,opposite leg is 15.

Find A to the nearest degree.
A)55
B)30
C)35
D)60
I chose C

  • Trigonometric functions -

    1 disagree
    Sin 32 = opposite / hypotenuse
    sin 32 = x / 7

    2
    sin A = 15/26
    sin A = .577
    A = 35.23 agree choose C

  • Trigonometric functions -

    For question 1, we need a trig function that equals opposite over hypotenuse.

    Which one?

    Tangent = OPP/HYP

    To find x we use CHOICE (C).

    ============================

    For question 2, we are looking for angle A.

    We use tan(A) = OPP/HYP

    tan(A) = 15/26

    Since we are looking for an angle, we MUST use the inverse key. Keep that in mind!

    Let arc = INVERSE

    Then tanarc = the inverse of tangent

    A = tanarc(15/26)

    A = 29.98163937

    When we round the decimal number above to the nearest degree, we are really rounding the whole number (our 29) to the nearest tens place.

    What is 29 rounded to the neaesrt tens place?

    Final Answer: 30....Choice (B)

    Done!

  • Trigonometric functions -

    Jon,

    I made a mistake.

    Sorry!

    sine = OPP/HYP NOT tangent.

    It was a simple mistake.

    Damon got it right.

    Thanks, Damon!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. trigonometric functions

    im compeletely lost with the trigonometric functions...can anyone explain clearly to me?
  2. Evaluation-repost

    Reposting because it has gone down to the second page! Evaluate 1. sin(tan inverse sqrt(x^2-2x)) 2. tan (sec inverse 3y) For 1. draw a right triangle and label the opposite leg sqrt(x^2-2x), the adjacent side 1 and the hypotenuse x-1. …
  3. Trigonometric functions

    Find the value of Sec A. and I have a right triangle BC=30 and BA=34 A)17/8 B)9/17 C)15/17 D)17/15 I chose D
  4. Math

    If the hypotenuse of a right triangle is 13 and one of its legs is 5, find the area fo the triangle. Answer Choices 20 40 45 30 25 I know a hypotenuse the side of a right triangle opposite the right angle. You can't multiply the hypotenuse …
  5. trig

    the leg opposite the 50 degree angle in a right triangle measures 8 meters. find the length of the hypotenuse
  6. math

    I have 14 questions and I was wondering if someone could check my answers. This is a do or die situation. If I don't get an A, I may not get to graduate. I really appreciate you taking your time to double check theses for me. Thanks …
  7. Geometry

    The altitude to the hypotenuse of a right triangle ABC divides the hypotenuse into 12mm and 16mm segments. Find the lengths of each of the following. A. The altitude to the hypotenuse B. The shorter leg of angle ABC C. The longer leg …
  8. Geometry

    I need help in this problem: A 14-foot ladder is leaning against a house so that its top touches the top of the wall. the bottom of the ladder is 8 feet away from the wall. which of these can be used to find the height of the wall?
  9. Algebra 2 Honors

    Hi, I'd like some help with one of the questions on my math homework. It has to do with a right triangle. I'm not sure how to set it up or if I should use the pythagorean theorem. This is the question: Vista county is setting aside …

More Similar Questions