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
Marysya12 [62]
2 years ago
5

A radio tower has a 64 ft Shadow cast by the sun. If the angle from the tip of the shadow to the top of the tower is 78.5°. what

is the height of the tower?
Mathematics
1 answer:
Softa [21]2 years ago
6 0

Step-by-step explanation:

right-angled triangle, and law of sine (for any type of triangles) :

a/sin(A) = b/sin(B) = c/sin(C)

where the sides and the correlated angles are always opposite from each other.

and we know that the sum of all angles in a triangle is always 180°.

so, the angle at the foot of the radio tower is 90°.

the angle from the top of the shadow to the top of the tower is 78.5°.

so, the third angle (at the top of the tower) is

180 - 90 - 78.5 = 11.5°

and with the law of sine we get

height/sin(78.5) = 64/sin(11.5)

height = 64×sin(78.5)/sin(11.5) = 314.57005... ft

You might be interested in
Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
allsm [11]

The vertical asymptote of the function f(x) = 3 log(x + 3) is x = -3

Step-by-step explanation:

A symptote is a line that a curve approaches but never touches

  • The vertical asymptote of a logarithmic function is at the zero of the argument
  • f(x) = log(argument) has vertical aymptotes at  argument  = 0

∵ f(x) = 3 ㏒(x + 3)

∵ The argument is (x + 3)

- Equate the argument by zero

∵ x + 3 = 0

- Subtract 3 from both sides

∴ x = -3

- The vertical asymptote of a logarithmic function is at the zero

  of the argument

∴ The vertical asympotote of f(x) is x = -3

The vertical asymptote of the function f(x) = 3 log(x + 3) is x = -3

Learn more:

You can learn more about the logarithmic functions in brainly.com/question/11921476

#LearnwithBrainly

8 0
3 years ago
A cone has a radius of 5 cm and a height of 12 cm. What is the volume of the cone rounded to the tenth? Use pi = 3.14
vlabodo [156]

Answer:

942m^3

Step-by-step explanation:

Given data

Radius of cone= 5m

Height= 12 m

We know that volume of a cone is given as

V= πr^2h

V= 3.14*5^2*12

V= 3.14*25*12

V= 942 m^3

Hence the volume is 942m^3

4 0
3 years ago
The diagonal of a rectangle is 25 in. The width is 15 in. What is the area of the rectangle
djyliett [7]
Here is your answer > >

Width of rectangle =15 inches

Length of rectangle =?

Diagonal of rectangle = 25 inches

We know that

(Diagonal of rectagle)^2=length^2+breadth^2

(25)^2=l^2+(15)^2

625=l^2+225

l^2=625-225

l^2=400

l=Root 400

l=20 inches

Hope it helps!

Thankyou ☆ ☆

Bebrainly
6 0
3 years ago
A company makes greeting cards and their research shows that that price and demand are related linearly: p=mx +b.They know that
musickatia [10]

Answer:

p = -0.05m + 22

Step-by-step explanation:

As given in question,

The relation between the price and demand can be given by,

  • p=mx +b

where is p is price and x is demand.

Since in order to sell 300 cards the price has to be fix at $7.

So,

  7 = 300m+b <u>          </u> (1)

And for every additional card they need to drop the price by $0.05.

So,

7-0.05 = 301m+b

=>6.95 = 301m + b<u>           </u> (2)

Subtracting equation (1) from equation (2), we will have

6.95 - 7 = 301m - 300m

=>m = -0.05

By putting the value of m in equation (1), we get

7 = 300.(-0.05)+b

=> b = 22

So, the linear equation that show the relation between price and demand is given by

p = -0.05m + 22

4 0
4 years ago
(x+5)^(2)-(x-3)(x+5)
nadya68 [22]

Answer:

the answer is 8x+40

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • Line M passes through the points (–5, 9) and (–1, 9).
    15·2 answers
  • What is the slope of the line with equation y=-5x
    15·1 answer
  • Evaluate u/z+xy^2 for u=10, x=3, y=7, and z=5
    10·1 answer
  • Jane is Billy's sister, Jane is 3 years older than 2 times Billy's age. If Billy is 7 years old then how old is Jane?
    7·2 answers
  • I need help I don’t understand this if someone could show me step by step
    13·1 answer
  • A = 2 b= 5 c = 9 find the discriminant
    13·1 answer
  • Please help b/c i don’t get this.
    11·1 answer
  • 1. To make one glass of chocolate milk, you mix 1 cup of milk with 3 tablespoons of chocolate powder. How many cups of milk woul
    9·1 answer
  • An electrician charges $40 for each hour plus a $25 surcharge. The electrician raises the charges for each hour by $5. Write an
    11·1 answer
  • By rounding to 1 significant figure, estimate <br><br> 306.9 x 6.4
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!