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3 years ago

1. Reduce the following expression to a single function of one angle: cos(45° + A) + cos(45° − A).

Mathematics

1 answer:

Virty [35]3 years ago

6 0

Hope this helps you!!!!!

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A square with diagonals is shown. the distance from one point to the middle point is x. the length from the center point to anot

Rina8888 [55]

The approximate value of x in the square that the diagonals meets to form four right angles is 5.7 units

<h3>Properties of a square.</h3>

All the sides are equal.
Opposite sides are parallel to each other.
The diagonal intersects at right angle.

Using Pythagoras theorem the value of x can be found as follows:

c² = a² + b²

where

c = hypotenuse
a and b are other legs

Therefore,

8² = x² + x²

64 = 2x²

x² = 64 / 2

x = √32

x = 5.65685424949

x = 5.7 units

learn more on square here:brainly.com/question/12338379

#SPJ4

6 0

2 years ago

Read 2 more answers

What is the fraction for What is the fraction for 0.21

gavmur [86]

The fraction for 0.21 would be 21/100

3 0

3 years ago

Determine the mean of the numbers 6, 17, 22, 28, and 37.

Kipish [7]

To find the mean or the avg you add up all the numbers you have and then divide by how many numbers you added together in this case 5

$6+ 17+22+28+37=110$

$\frac{110}{5} =22$

so the mean is 22, hope this helped you!

4 0

3 years ago

Solve the quadratic by factoring.<br> x^2-5x-31=5

torisob [31]

Answer:

$x = - 4\: or \: x = 9$

Step-by-step explanation:

make one side equal to zero:

${x}^{2} - 5x - 36 = 0$

find two factors that multiply to -36 and add to -5 (-9 & 4)

${x }^{2} - 9x + 4x - 36 = 0$

factorise

$x(x - 9) + 4(x - 9) = 0$

$(x + 4)(x - 9) = 0$

solve for x

$x = - 4 \: or \: x = 9$

5 0

3 years ago

Write an equation of the line that passes through (3,1) and (0,10) .

frutty [35]

Answer:

(1,1) and (0,1)

Step-by-step explanation:

i think thats it i dont know what it looks like i need a picture of it

7 0

2 years ago