1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bezimeni [28]
3 years ago
13

Can someone help me on trigonometry ?

Mathematics
1 answer:
Olenka [21]3 years ago
6 0
Using the image I gave you, you don't need to solve for x.
So tan is opposite/adjacent
sin: opposite/hypotenuse
cos: adjacent/hypotenuse
Take theta and do: adjacent/hypotenuse which is cosine
cos theta = adjacent/hypotenuse
cos theta = 1.5/9
inverse cos = 1.5/9 and the answer is: 80.4 degrees

You might be interested in
Anita text a photo of five Dolphins to a friend to five friends she asked each of her five friends to text the photo to 5 more f
Y_Kistochka [10]
You would multiply 78,125 by 5 and get I think 390,625? I think
7 0
3 years ago
Read 2 more answers
What is y when x = 60?
ArbitrLikvidat [17]

Answer:

300

Step-by-step explanation:

3 0
3 years ago
Is (3, 2) a solution to this system of equations?
Paha777 [63]
If x = 3 and y =2 then 8x+7y= 38
and 2y = 4x is correct

hope it helps :)

edit i was incorrect about second answer it would be 

2y =4x-4
7 0
3 years ago
At a certain time of the day, a tree that is x meters tall casts a shadow that is x-49 meters long. If the distance from the top
nikklg [1K]

The height of the tree is 60 meters.

Explanation:

Let the height of the tree be x. The tree casts a shadow of x-49 meters and the distance from the top of the tree to the end of the shadow is x+1 meters.

The sides of the triangle are attached in the image below:

Using pythagoras theorem,

x^{2}+(x-49)^{2}=(x+1)^{2}

Expanding, we get,

2 x^{2}-98 x+2401=x^{2}+2 x+1

2 x^{2}-98 x+2400=x^{2}+2 x

2 x^{2}-100 x+2400=x^{2}

x^{2}-100 x+2400=0

Solving the equation using the quadratic formula x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}, we get,

x=\frac{-(-100)\pm\sqrt{(-100)^{2}-4 \cdot 1 \cdot 2400}}{2 \cdot 1}

Simplifying, we have,

x=\frac{100\pm\sqrt{10000-9600}}{2}

x=\frac{100\pm\sqrt{400}}{2}

x=\frac{100\pm{20}}{2}

Thus,

x=\frac{100+20}{2} \\x=\frac{120}{2} \\x=60  and  x=\frac{100-20}{2} \\x=\frac{80}{2} \\x=40

where the value x=40 is not possible because substituting the value x=40 in x-49 results in negative solution. Which is not possible.

Hence, the value of x is 60.

Thus, The height of the tree is 60 meters.

7 0
3 years ago
The sum of three consecutive negative integers is -138. Which is the greater integer? A. -45. B. -46. C.-47. D.-48
nika2105 [10]

Answer:

-45

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Which of the following is the reciprocal parent function A.f(x)= -x^2 B.F(x)= x+1 C. F(x)=|x| D.F(x)=1/x
    7·2 answers
  • Write the sum of 3x^2 + x + 8 and x^2 - 9
    8·1 answer
  • A item is regularly priced at $73 . Manuel bought it at a discount of 45% off the regular price.
    9·2 answers
  • How do you find the average of a group of numbers
    7·1 answer
  • Is 83 cm greater than or less than 1m? What is the difference in the lengths?
    9·1 answer
  • Jerome recently moved to a new city and bought a home. The assessment rate is 51%. The property tax rate is $53.26 per $1000. Wh
    6·1 answer
  • The dot plot shows the number of hours of daily driving time for 14 school bus drivers. Each dot represents a
    5·1 answer
  • I do not know how to do this​
    12·1 answer
  • Please look at the picture, I need help ASAP.
    14·1 answer
  • The image of the point (-5, 1) under a translation is (-6, 3). Find the coordinates
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!