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
Arte-miy333 [17]
3 years ago
15

Find cos0 where 0 is the angle shown. Give an exact value, not a decimal approximation.​

Mathematics
2 answers:
bogdanovich [222]3 years ago
8 0

Answer:

cos(∅) = 3/5

Step-by-step explanation:

cos(∅) = adjacent/hypotenuse

We don't know what the hypotenuse is so we gotta use Pythagorean theorem to find it.

a² + b² = c²

4² + 3² = c²

√(4² + 3²) = c

c = 5  ,  this is our hypotenus

cos(∅) = adjacent/hypotenuse

cos(∅) = 3/5

irina1246 [14]3 years ago
3 0

Answer: Cos0 = 3/5

Step-by-step explanation: In order to calculate the value of Cos0, we would have to apply the trigonometrical ratio of

Cos0 = adjacent/hypotenuse

The adjacent is already given as 3 units (the side that lies between the reference angle and the right angle).

In order to calculate the hypotenuse (unknown side, which we shall label as X), we shall apply the Pythagoras theorem, which is;

X² = 3² + 4²

X² = 9 + 16

X² = 25

Adding the square root sign to both sides of the equation, we now have

X = √25

X = 5

Now that we have the adjacent (3 units) and the hypotenuse (5 units), the cosine of the unknown angle can be calculated thus,

Cos0 = adjacent/hypotenuse

Cos0 = 3/5

You might be interested in
Determine the quadrant(s) in which (x,y) is located so that the condition(s) is (are) satisfied.
polet [3.4K]

Quadrant 2 is the only one that can satisfy the condition. In there, x<0 and y>0

7 0
3 years ago
kali has a 6 centimeter ladder and puts the base of the ladder 2 meters away from the tree how high into the tree will the lader
weqwewe [10]
I am going to assume ‘centimetre’ was a typo.

A^2 + B^2 = C^2

C^2 - A^2 = B^2

32 = B^2

Square root both sides

B = 5.7m high

The ladder will reach 5.7 meters high
5 0
3 years ago
What is the answer to 2/3 of something equals 10
denis23 [38]
In math, when you see the word "of" it usually means "times".

So the question is:

        <u>2/3 times something = 10</u>

Multiply each side of the equation by 3 :

             2 times something = 30

Divide each side by 2 :

                        <em>  something = 15</em>
7 0
3 years ago
Read 2 more answers
Item 4<br> Write the word sentence as an inequality.<br><br> A number b is at least −3.
never [62]

Answer:  b≥-3

Step-by-step explanation:

at least means that it's great or equal than -3.

b≥-3

7 0
3 years ago
PLEASE ANSWER! URGENT
Lorico [155]
There would be 2034 students competing in 2012.

We can write a simple equation to find this answer. Let X, be the number of students starting in 2012. Then, we multiply by 0.9 and 1.1 to get to 2014. To work backwards, just divide by 1.1, then by 0.9.

2014 / 1.1 / 0.9 = 2034
4 0
3 years ago
Other questions:
  • 2. When Mrs. Romano was pricing cans of tomato sauce, she noticed the following prices.
    12·1 answer
  • _________ inhibition is the slowing or stopping of an early reaction in a series of reactions.
    6·1 answer
  • A line through slope -2 and y-intercept 4
    8·1 answer
  • Someone tell me the answer and explain
    11·1 answer
  • The lowest recorded temperature in Antarctica was about 90°F below zero. The highest recorded temperature in Antarctica was abou
    14·2 answers
  • Michelle purchased 2/4 of a pound of pastries for her family. She has to divide them equally among 6 family members. How many po
    7·1 answer
  • Adriana is excited to go to the used video game store to buy a gaming system later today. The gaming system usually costs x doll
    7·1 answer
  • Help me please thx....................
    7·2 answers
  • MATH: EXPONENTIAL WORK PROBLEM 1. HELP PLEASE! 13 pts
    7·1 answer
  • ese Missy wants to determine whether x + 3 is a factor of the polynomial the x^4 + x² +6x-9 by using the factor theorem How does
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!