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
ioda
3 years ago
15

Sin∅=3/5, then cos∅=_____

Mathematics
1 answer:
alexandr1967 [171]3 years ago
7 0

Answer:

4/5.

Step-by-step explanation:

The right triangle with this angle in it has sides 3, 4 and 5.  ( 5^2 = 3^2 + 4^2).

So as sin∅ = 3/5,  the opposite side to angle ∅ is 3 , the hypotenuse is 5 and the adjacent side must be 4 units long.

So cos∅ = adjacent side/hypotenuse = 4/5.

You might be interested in
Sean spelled 13 out of 20 words correctly on his srelling test. Write his test score as a percent.
babunello [35]
Sean has scored a score of 65% on his spelling test
4 0
3 years ago
Read 2 more answers
The coordinate grid shows points a through k. Which points are solutions to the system of inequalities 2x+y 8 please help this i
andre [41]

Answer:

The points that verify the system of inequalities are:

point E, pointF, and point G.

Step-by-step explanation:

Please see the attached image that illustrates the boundary lines in your system of inequalities.

The boundary line for the inequality 2x+y is depicted in green, while the boundary line for the inequality 2x-4y>8 is depicted in red.

By solving for y in each inequality, we understand which half-plane should be considered for the inequality:

First inequality (green boundary line) :

2x+y

This means that we are to consider the points below the green boundary line.

Second inequality (red boundary line) :

2x-4y >8\\2x-8>4y\\y

This means we have to consider the points below the red boundary line.

Recall as well that both conditions we arrived at have to be satisfied by the points that are solutions of both inequalities.

From the image, we can see that there are only three points that reside at the same time below the green and the red boundary lines. These points are: point E, pointF, and point G.

On the other hand, we have two points that lie on a boundary line (point J and H), but they should be ignored, since the system of inequalities contain just inequality symbols < or >, and not the "equal" sign.

5 0
3 years ago
Perform the indicated operation and simplify the result 4x^3/3×(9/x)^3
STatiana [176]
The first thing we are going to do for this case is to rewrite the function correctly.
 We have then:
 \frac{4x^3}{3} *  (\frac{9}{x})^3
 For power properties we have:
 \frac{4x^3}{3} * \frac{9^3}{x^3}
 Canceling similar terms we have:
 \frac{4*9^3}{3}
 Doing the calculations we have:
 972
 Answer:
 
The result of the expression is:
 
A 972
4 0
4 years ago
Find the x intercepts of the parabola with vertex (-1,-16) and y intercept (0,-15)
balandron [24]
<span> first, write the equation of the parabola in the required form: </span>
<span>(y - k) = a·(x - h)² </span>

<span>Here, (h, k) is given as (-1, -16). </span>
<span>So you have: </span>
<span>(y + 16) = a · (x + 1)² </span>

<span>Unfortunately, a is not given. However, you do know one additional point on the parabola: (0, -15): </span>

<span>-15 + 16 = a· (0 + 1)² </span>
<span>.·. a = 1 </span>

<span>.·. the equation of the parabola in vertex form is </span>
<span>y + 16 = (x + 1)² </span>

<span>The x-intercepts are the values of x that make y = 0. So, let y = 0: </span>

<span>0 + 16 = (x + 1)² </span>
<span>16 = (x + 1)² </span>

<span>We are trying to solve for x, so take the square root of both sides - but be CAREFUL! </span>

<span>± 4 = x + 1 ...... remember both the positive and negative roots of 16...... </span>

<span>Solving for x: </span>
<span>x = -1 + 4, x = -1 - 4 </span>
<span>x = 3, x = -5. </span>

<span>Or, if you prefer, (3, 0), (-5, 0). </span>
8 0
3 years ago
The volume of a cube is 2197mm (cubed) what is the length of its side
Mademuasel [1]

Answer:

l^3=volume of cube

l^3=2197

l=13

5 0
3 years ago
Other questions:
  • Evaluate the function f(x) = –2x2 – 3x + 5 for the input value –3.
    13·1 answer
  • Plz help me :,( also show the work too /:
    7·1 answer
  • Use a graphing calculator to find the value of f(x) when x = 2 for the function f(x)=x2-5.
    12·1 answer
  • Cos("*) =<br> O A. V3<br> 2<br> O B.<br> 13<br> 2<br> C.<br> 1<br> D.<br> NI
    14·1 answer
  • If AB vector =(4 5) and PQ vector=(2p 10) are parallel to each other, find the value of p.​
    7·1 answer
  • Find x.<br> Round to the nearest tenth:<br> 28°<br> 350 ft<br> y<br> x = [ ? ]ft
    13·1 answer
  • I have an exam and I need you to help me
    9·1 answer
  • What is value of x need help ASAP if so
    11·2 answers
  • A movie theater charges $6 for each adult and $3 for each child. If the total amount in
    14·1 answer
  • Five classes collected money for a charity of their choice. The amounts of money collected by the boys and girls of each are sho
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!