4 years ago

2\3÷6\10, 9/10÷3\4,1\3÷4\5 how to do these

Mathematics

1 answer:

DENIUS [597]4 years ago

4 0

Following this question need help also

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If sin ⁡x=7/25, and 0 < x < π/2, what is cos⁡(x−3π/2)?

Likurg_2 [28]

Answer:

$Cos(x-\frac{3\pi}{2})=-\frac{7}{25}$

Step-by-step explanation:

Remember that $cos(x-y)=cos(x)cos(y)+sin(x)sin(y)$

Then,

$cos(x-\frac{3\pi}{2})=cos(x)cos(\frac{3\pi}{2})+sin(x)sin(\frac{3\pi}{2})\\$

But $cos(\frac{3\pi}{2})=0$ and $sin(x)=\frac{7}{25}$

Then

$cos(x-\frac{3\pi}{2})=cos(x)*0+\frac{7}{25}*sin(\frac{3\pi}{2})\\=\frac{7}{25}*(-1)=\frac{-7}{25}$

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3 years ago

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pshichka [43]

Answer:

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Step-by-step explanation:

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3 years ago

(x-8)^2 + (y-2)^2 =9

OverLord2011 [107]

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Step-by-step explanation:

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3 years ago

X + 9= -2

gizmo_the_mogwai [7]

Ok so I know the answere it is -11

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Marizza181 [45]

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Step-by-step explanation:

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4 years ago