All categories

3 years ago

What is the measure of angle a?

Mathematics

1 answer:

Korolek [52]3 years ago

6 0

Answer:

i dont know sorry type in the comments if you do!!!!

Step-by-step explanation:

You might be interested in

What is the vertex of the function f(x) = x2 + 12x?

Ne4ueva [31]

Answer:

es la tercera amiga yo pienso

7 0

3 years ago

What is the distance between (−10, −2) and (−4, −2) ? −14 units −6 units 6 units 14 units

Lesechka [4]

Answer:

6 units

Step-by-step explanation:

to calculate the distance d between the points use the distance formula

d = √(x₂ - x₁ )² + (y₂ - y₁)²

with (x₁, y₁ ) = (- 10, - 2) and (x₂, y₂ ) = (- 4, - 2)

d = $\sqrt{(-4+10)^2+(-2+2)^2}$ = $\sqrt{6^2+0^2}$ = $\sqrt{36}$ = 6

4 0

3 years ago

Please help and explain questions 20-22

zmey [24]

Hello!

The formula for circumference is $2\pi r$ and the formula for area of a circle is $\pi r^{2}$ . Armed with these formulas, we can begin to find the circumferences and areas of the circles.

20.
C = $2 \pi r$
C = $2 \pi (6.5)$
C = $13 \pi$
C = 13(3.14)
C = 40.8

A = $\pi r^{2}$
A = $\pi (6.5)^{2}$
A = $\pi (42.25)$
A = 132.7

The circumference of the circle is 40.8 in and the area of the circle is 132.7 in².

21.
[Since we are given the diameter for this problem, to find the circumference, we no longer need to multiply the radius by 2 as in $2 \pi r$ because the diameter is the radius × 2. For $\pi r^{2}$ we do need to divide the diameter by 2.]

C = $15.7 \pi$
C = 49.3

A = $\pi r^{2}$
A = $\pi (7.85)^{2}$
A = $61.62 \pi$
A = 193.5

The circumference of the circle is 49.3 in and the area of the circle is 193.5 in².

And that is all there is to it. I hope this helps you! (:

6 0

3 years ago

Angle θ lies in the second quadrant, and sin θ = .

nata0808 [166]

Answer:

The coordinate axes divide the plane into four quadrants, labelled first, second, third and fourth as shown. Angles in the third quadrant, for example, lie between 180∘ and 270∘ &By considering the x- and y-coordinates of the point P as it lies in each of the four quadrants, we can identify the sign of each of the trigonometric ratios in a given quadrant. These are summarised in the following diagrams. &In the module Further trigonometry (Year 10), we saw that we could relate the sine and cosine of an angle in the second, third or fourth quadrant to that of a related angle in the first quadrant. The method is very similar to that outlined in the previous section for angles in the second quadrant.

We will find the trigonometric ratios for the angle 210∘, which lies in the third quadrant. In this quadrant, the sine and cosine ratios are negative and the tangent ratio is positive.

To find the sine and cosine of 210∘, we locate the corresponding point P in the third quadrant. The coordinates of P are (cos210∘,sin210∘). The angle POQ is 30∘ and is called the related angle for 210∘.

Step-by-step explanation:

6 0

3 years ago

Express this number in scientific notation

AnnZ [28]

Please include the number or a photograph or it! Thank you!

3 0

4 years ago