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3 years ago

Calculate the length of the circumference of a circle with a diameter of 4cm

Mathematics

1 answer:

MakcuM [25]3 years ago

6 0

Length of circumference is 2πr
2 π r and r is equal to 2 cm
I.e 12.5 cm

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FD bisects AB <br> FE bisects CB<br> What can you conclude? Reason for conclusion?

valkas [14]

We can't conclude FA=FC.

Let's go with the obvious, AD=BD, BE=CE by the definition of bisector

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3 years ago

What are the sine cosine and tangent of theta=7pi/4 radians

FrozenT [24]

Answer:

see explanation

Step-by-step explanation:

$\frac{7\pi }{4}$ is in the fourth quadrant

Where sin and tan are < 0 , cos > 0

The related acute angle is 2π - $\frac{7\pi }{4}$ = $\frac{\pi }{4}$

Hence

sin([ $\frac{7\pi }{4}$ ) = - sin( $\frac{\pi }{4}$ ) = - $\frac{1}{\sqrt{2} }$ = - $\frac{\sqrt{2} }{2}$

cos( $\frac{7\pi }{4}$ ) = cos( $\frac{\pi }{4}$ ) = $\frac{\sqrt{2} }{2}$

tan( $\frac{7\pi }{4}$ = - tan( $\frac{\pi }{4}$ = - 1

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3 years ago

Read 2 more answers

A problem states “ there are nine more children than parents in a room. There are 25 people in the room and all. How many childr

11Alexandr11 [23.1K]

Answer:

Step-by-step explanation:

If C represents the number of children you aren't gonna want to multiple like how it shows in option b and you aren't gonna wanna subtract.

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2 years ago

What is measure of angle A?

Goryan [66]

Answer:

$A=53.13\°$

Step-by-step explanation:

The figure shows a right triangle.

To calculate the measure of the angle A, you can use the inverse trigonometric function arctangent:

$\alpha=arctan(\frac{opposite}{adjacent})$

Identify the angle $\alpha$ , the opposite side and the adjacent side:

$\alpha=A\\opposite=4cm\\adjacent=3cm$

Substitute into $\alpha=arctan(\frac{opposite}{adjacent})$ .

The measure of the angle A is:

$A=arctan(\frac{4}{3})\\\\A=53.130\°$

Rounded to the nerarest hundreth:

$A=53.13\°$

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3 years ago

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Juli2301 [7.4K]

Answer:

Then, see how to find the volume of each of those individual figures to find the volume of the entire composite figure. Watch the whole process in this tutorial!

Step-by-step explanation:

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3 years ago