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2 years ago

Please help im stuck

Mathematics

1 answer:

Nadusha1986 [10]2 years ago

5 0

The answer is y=3x-12

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If tan theta = 10/13 and cos theta > 0 then sin2theta is what ?

svetoff [14.1K]

$sin2\alpha = \frac{260}{269}$

Step-by-step explanation:

We have , $Tan\alpha = \frac{Perpendicular}{Base} = \frac{10}{13}$ ,

We know that $sin\alpha = \frac{Perpendicular}{Hypotenuse} = \frac{Perpendicular}{\sqrt[2]{(Perpendicualr)^{2} + (Base)^{2})} }$

Substituting values of P & B , $sin\alpha = \frac{10}{\sqrt{10^{2} + 13^{2}} } = \frac{10}{\sqrt{269} }$

Now , $sin2\alpha = 2sin\alpha cos\alpha = 2sin\alpha \sqrt{1 - (sin\alpha)^{2} }$

⇒ $sin2\alpha =$ $\frac{10}{\sqrt{269} }$ × $\sqrt{1 - (\frac{10}{\sqrt{269} })^{2} }$ ×2

⇒ $sin2\alpha = \frac{20}{\sqrt{269} }( \sqrt{\frac{269 - 100}{269} } )$

⇒ $sin2\alpha = \frac{20}{\sqrt{269} }( \sqrt{\frac{169 }{269} } )$

⇒ $sin2\alpha = \frac{260}{\sqrt{269} }( \sqrt{\frac{1}{269} } )$

⇒ $sin2\alpha = \frac{260}{269}$

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3 years ago

What is the slope of this graph? a.4 b.−4 c.14 d.−14

max2010maxim [7]

Answer:

Step-by-step explanation:

just look at where the line crosses the coordinate plane

7 0

2 years ago

Read 2 more answers

8 divided by 173 round the answers to 3 decimals

Ymorist [56]

8/173 = 0.046

Hope this helps! ;)

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3 years ago

Which decimal is equivalent to -3 1/8? *20 points*

kondaur [170]

Answer: -3.125

Step-by-step explanation: -1 divided by 8 = .125

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2 years ago

What is the value of x

geniusboy [140]

Answer:

Step-by-step explanation:

3x+2

3(11)+2

33+2

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3 years ago