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3 years ago

Pie over 4 is the reference angle for

Mathematics

1 answer:

Lesechka [4]3 years ago

5 0

45 degrees is the answer

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GCSE 995381

nikdorinn [45]

Answer:

$2.9 cm^2$

Step-by-step explanation:

Given,

Angle of sector = 30°

Radius of circle, r = 8 cm

Area of the shaded region, A =?

The diagram is attached below.

Now,

Area of shaded region = Area of sector - Area of triangle

Area of triangle = $\frac{1}{2}\times base \times height$

We know that,

$\sin \theta = \dfrac{P}{H}$

$\sin 30^\circ= \dfrac{P}{8}$

$P = \dfrac{8}{2}$

$P = 4\ cm$

And

$\cos \theta =\dfrac{B}{H}$

$\cos 30^\circ = \dfrac{B}{8}$

$B = \dfrac{8\times \sqrt{3}}{2}$

$B = 4\sqrt 3$

Area of sector = $\dfrac{\theta}{360^\circ}\times \pi r^2$

Area of sector = $\dfrac{30^\circ}{360^\circ}\times \pi \times 8^2$

= 16.75 cm^2

Area of triangle = $\dfrac{1}{2} \times 4\sqrt 3 \times 4$

= 13.85 cm^2

Area of shaded region = 16.75 - 13.85

= $2.9 cm^2$

7 0

3 years ago

Help me please. Please follow every step that it says

Reptile [31]

Answer: the answer to ur questions will be 54-17=37

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Apply the distributive property to factor out the greatest common factor: 27+16

notsponge [240]

The greatest common factor (GCF or GCD or HCF) of a set of whole numbers is the largest positive integer that divides evenly into all numbers with zero remainder.

Answer:

GCF = 1

for the values 16, 27

The factors of 16 are: 1, 2, 4, 8, 16

The factors of 27 are: 1, 3, 9, 27

4 0

1 year ago

What is higher 4\8 or 4\10

pogonyaev

4/8 is bigger. Before you take 4 of the pieces, the whole thing is only cut up into 8 pieces, not 10, so the pieces are bigger.

8 0

3 years ago

Read 2 more answers

Graph the function g(x)=−<img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7D" id="TexFormula1" title="\frac{1}{3}" alt="\fra

Sidana [21]

Answer:

Step-by-step explanation:

Comment

If you do not have a graphing calculator the best thing to use is Desmos. Desmos is free -- anyone can use it and and the graphs can be used here on Brainly. I've downloaded the graph for you.

There are a couple of things you should notice.

The most downward point is (-5,-3)

The largest root is x = -2

The smallest root is x = - 8

Notice the roots are the opposite of what you are given. You will eventually learn how to do all of these things.

3 0

2 years ago