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3 years ago

9

When would you use herons formula in the real world?

2 answers:

yan [13]3 years ago

5 0

You can use herons formula to calculate the area of any triangles when you know the lengths of three sides real life math consumer math

Natalka [10]3 years ago

4 0

Heron's formula is named after Hero of Alexendria, a Greek Engineer and Mathematician in 10 - 70 AD. You can use this formula to find the area of a triangle using the 3 side lengths. Therefore, you do not have to rely on the formula for area that uses base and height. The picture below illustrates the general fro mu la where S represents the semi-perimeter of the triangle ,

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If f(x)=ln(sin(2x)), f''(π/4) is equal to

Licemer1 [7]

Use the chain rule to compute the second derivative:

$f(x)=\ln(\sin(2x))$

The first derivative is

$f'(x)=(\ln(\sin(2x)))'=\dfrac{(\sin(2x))'}{\sin(2x)}=\dfrac{\cos(2x)(2x)'}{\sin(2x)}=\dfrac{2\cos(2x)}{\sin(2x)}$

$f'(x)=2\cot(2x)$

Then the second derivative is

$f''(x)=(2\cot(2x))'=-2\csc^2(2x)(2x)'$

$f''(x)=-4\csc^2(2x)$

Then plug in π/4 for <em>x</em> :

$f''\left(\dfrac\pi4\right)=-4\csc^2\left(\dfrac{2\pi}4\right)=-4$

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3 years ago

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Montano1993 [528]

Answer:

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3 years ago

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Solve for f.<br> 9f = 8f + 8<br> f

Svet_ta [14]

Answer:

f = 8

Step-by-step explanation:

9f = 8f + 8

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= f

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2 years ago

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Please help me answer this

yaroslaw [1]

Answer:

A. Max is ten miles from home after three miles.

B. Ali started a nine miles away from home.

C.Ali spent 3 hours in the same place.

D. Max spent 9 hours in the same place.

Step-by-step explanation:

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3 years ago

In 56 years, Kevin will be 9 times as old as he currently is. How old is Kevin currently?

kiruha [24]

He is currently 47.

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3 years ago

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