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
musickatia [10]
2 years ago
5

SinA=√1-x÷√1+X Find the value of cosA

Mathematics
1 answer:
Irina-Kira [14]2 years ago
6 0

The value of cos A is √(1 + x²)/ (1 - x²) /√1 + x

<h3>Trigonometric ratios</h3>

It is important to note that

sin A = opposite/ hypotenuse

cos A = adjacent/ hypotenuse

Then,

opposite = \sqrt{1} - x

Hypotenuse = \sqrt{1} + x

Let's find the adjacent side using the Pythagorean theroem

(\sqrt{1} + x)^2 = (\sqrt{1 -x } )^2 + x^2

1 + x^2 = 1 - x^2 + x^2

x = \sqrt{\frac{1 + x^2}{1 -x^2} }

cos A = x/hypotenuse

cos A = \frac{\sqrt{\frac{1+x^2}{1 -x^2} } }{\sqrt{1} +x}

cos A = √(1 + x²)/ (1 - x²) /√1 + x

Thus, the value of cos A is √(1 + x²)/ (1 - x²) /√1 + x

Learn more about trigonometric identities here:

brainly.com/question/7331447

#SPJ1

You might be interested in
What does a “3-mile” radius mean? What does it look like, and how large is it?
Vesnalui [34]

Answer:

the radius is halfway across the circle, while diameter is all the way across. for reference, a three mile radius would be equivalent to 52.8 football fields

Step-by-step explanation:

5 0
3 years ago
The dimensions of a rectangle are dilated using a scale factor of 3. If the old area is 75 sq. Ft. What is the area of the new r
Law Incorporation [45]

Answer:

225 sq. Ft

Step-by-step explanation:

Key words in the question;

Dilated - This means increased pr expanded

Scale factor of 3 - This basically means multiplied by 3

Old square = 75 sq. Ft

This means;

New are = Old area * 3

New area = 75 * 3 = 225 sq. Ft

3 0
3 years ago
Which is the equation of a line parallel to the line with the equation y= 1/4x +2
natta225 [31]

Answer:

Any line with slope 1/4 like y=1/4x -5.

Step-by-step explanation:

Parallel lines never cross and therefore have the same exact slope. Since slope intercept form is y=mx+b and m is slope, then y=1/4x+2 has a slope of 1/4. Any line with a slope of 1/4 will be parallel. Example: y=1/4x - 5

3 0
3 years ago
Brandon has 79 bottle caps Gemma has 88 bottle caps who has more bottle caps then solve the problem
Katena32 [7]

Answer:Gemma has more bottle caps.

Step-by-step explanation:

5 0
3 years ago
Choose the correct data set that was used to create this stem-and-leaf plot.
kenny6666 [7]
The answer to your question is B
6 0
3 years ago
Other questions:
  • Two authors came to read to an audience. Author A read at a rate of 153 words per minute. Author B read at a rate of 184 words p
    7·1 answer
  • Soft 2 1/3 - 3/4 equals
    12·2 answers
  • How do you do this???????????????
    8·1 answer
  • Help me please someone
    13·1 answer
  • Log x - log x -1² = 2log(x-1)​
    13·1 answer
  • Help! Mad, range or Iqr?? <br> (Picture included)
    13·2 answers
  • Under his cell phone plan, Parker pays a flat cost of $36.50 per month and $5 per gigabyte. He wants to keep his bill under $45
    11·1 answer
  • Labeling Parts of a Circle
    15·1 answer
  • Find the Area of parallelogram <br>Six plus 2 times 2 divided by 2​
    8·2 answers
  • Solve 7x2(x + 1) = 6x + 14<br> Ox=-12<br> Ox = 12<br> Ox= -16<br> Ox = 16
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!