3 years ago

Please answer dis question

Mathematics

1 answer:

Ymorist [56]3 years ago

3 0

Answer:

Step-by-step explanation:

A = 4

B = 5

Theres a 1 number diffrence.

(sorry if its wring its 12am im tired-

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(1+cos2x)/(1-cos2x) = cot^2x

sesenic [268]

We will turn the left side into the right side.

$\dfrac{1 + \cos 2x}{1 - \cos2x} = \cot^2 x$

Use the identity:

$\cos 2x = \cos^2 x - \sin^2 x$

$\dfrac{1 + \cos^2 x - \sin^2 x}{1 - ( \cos^2 x - \sin^2 x)} = \cot^2 x$

$\dfrac{1 - \sin^2 x + \cos^2 x }{1 - \cos^2 x + \sin^2 x} = \cot^2 x$

Now use the identity

$\sin^2 x + \cos^2 x = 1$ solved for sin^2 x and for cos^2 x.

$\dfrac{\cos^2 x + \cos^2 x }{\sin^2 x + \sin^2 x} = \cot^2 x$

$\dfrac{2\cos^2 x}{2\sin^2 x} = \cot^2 x$

$\dfrac{\cos^2 x}{\sin^2 x} = \cot^2 x$

$\cot^2 x = \cot^2 x$

8 0

3 years ago

I need help with this problem please

docker41 [41]

<h3>Answer</h3>

B 5/8

<h3>Explanation</h3>

P(event)= 1/8 (the possibility that Jack rolls a 3) + 4/8 (the possibility that Jack rolls an even number such as 2,4,6,8) = 5/8

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3 years ago

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IRINA_888 [86]

Answer:

False hope this helps

Step-by-step explanation:

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3 years ago

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A black racer snake travels 4.6 km in 2 hours. What is the speed in km/h?

sergejj [24]

Answer:2.4km/hr

Step-by-step explanation:

Speed = distance/time

Speed =4.6/2

Speed=2.3km/hr

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velikii [3]

Answer:

2(4x+3y)

Step-by-step explanation:

2(4x+3y)=8x+6y

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