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Sholpan [36]
3 years ago
14

If sin(x) = 0.28, what is cos(90° - x)?

Mathematics
2 answers:
nevsk [136]3 years ago
5 0
Cos (90-x) x is 28. I hope this helps you.
Ilya [14]3 years ago
5 0

Answer:

The answer is 0.28.

Step-by-step explanation:

We know that,

A trigonometric property is,

sin A = cos (90^{\circ} -A)

Where A is any angle,

Given,

sin x = 0.28

By the above property,

sin x = cos (90^{\circ}-x)

\implies cos (90^{\circ}-x) = 0.28

Hence, the answer would be 0.28.

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Describe fully the single
den301095 [7]

Answer:

a rotation of 180° about point (0,2)

a dilation of 0.5

Step-by-step explanation:

6 0
3 years ago
Write the standard form of the equation of the circle with center (7,1) that also contains the point (−1,−5).
Karo-lina-s [1.5K]

Answer:

(x-7)^2+(y-1)^2=100

Step-by-step explanation:

<u>1) Find the radius</u>

We can do this by using the distance equation with the centre (7,1) and the given point (-1,-5):

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2} where the two points are (x_1,y_1) and (x_2,y_2)

Plug in the points (7,1) and (-1,-5)

d=\sqrt{(-1-7)^2+(-5-1)^2}\\d=\sqrt{(-8)^2+(-6)^2}\\d=\sqrt{64+36}\\d=\sqrt{100}\\d=10

Therefore, the radius of the circle is 10 units.

<u>2) Plug the data into the equation of a circle</u>

Equation of a circle (when not centred at the origin):

(x-h)^2+(y-k)^2=r^2 where the centre is (h,k) and r is the radius

Plug in the centre (7,1) as (h,k)

(x-7)^2+(y-1)^2=r^2

Plug in the radius 10

(x-7)^2+(y-1)^2=10^2\\(x-7)^2+(y-1)^2=100

I hope this helps!

4 0
3 years ago
Explain how you can find 3*584 using expanded form
Julli [10]

The expanded form of 584 is:

584 = 500 + 80 + 4

Therefore:

3 · 584 = 3 · ( 500 + 80 + 4 )

Then we will use Distributive property : we can multiply a sum by muptiplying each addend separately and then add the products.

3 · 500 + 3 · 80 + 3 · 4 = 1,500 + 240 + 12 = 1,752

Finally: 3 · 584 = 1,752.

8 0
3 years ago
What is -4x - 10 ≤ 2?
Yuri [45]

Answer:

x≥-3

Step-by-step explanation:

-4x-10≤2

-4x≤2+10

-4x≤12

x≥12÷-4 (The sign flips around when you divide by a negative number.)

x≥-3

5 0
3 years ago
Convert 3/8 into percent show the work
Kipish [7]
To get the decimal think of 3/8 as a division question -3 divided by 8

3/8=0.375

now times the decimal by 100

0.375 * 100=37.5

so the answer is going to be 37.5%
4 0
3 years ago
Read 2 more answers
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