3 years ago

Is it nice or not? vacations lice mice janury

1 answer:

3 0

Vacation is nice January is nice

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mylen [45]

Answer:

x = {3, 5}

Step-by-step explanation:

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2 years ago

Anit [1.1K]

Double angle identity for sine:

$\sin(2x) = 2 \sin(x) \cos(x)$

$\implies 2 \sin(\theta) - \sin(2\theta) \cos(\theta) = 2 \sin(\theta) - 2 \sin(\theta) \cos^2(\theta)$

Factorize the left side.

$2 \sin(\theta) - 2 \sin(\theta) \cos^2(\theta) = 2 \sin(\theta) \left(1 - \cos^2(\theta)\right)$

Pythagorean identity:

$\cos^2(x) + \sin^2(x) = 1$

$\implies 2 \sin(\theta) \left(1 - \cos^2(\theta)\right) = 2 \sin^3(\theta)$

so that

$\boxed{2 \sin(\theta) - \sin(2\theta) \cos(\theta) = 2 \sin^3(\theta)}$

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Vinvika [58]

40 dollars per 5 students=9 dollars per 1 student

divide both sides by 5.

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bixtya [17]

The second ramp should be 5.4 ft long

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lina2011 [118]

Ans: 120 different ways

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