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topjm [15]
3 years ago
12

Help please !!! Soqnsonsnwoamwoskwozkzkxksksmmsndp

Mathematics
1 answer:
grandymaker [24]3 years ago
6 0

Answer:

tgulriao e jkbal2 3n

Step-by-step explanation:

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Sin α = 21/29, α lies in quadrant II, and cos β = 15/17, β lies in quadrant I Find sin (α - β).
Sever21 [200]
\sin(\alpha-\beta)=\sin\alpha\cos\beta-\cos\alpha\sin\beta

\sin\alpha=\dfrac{21}{29}\implies \cos^2\alpha=1-\sin^2\alpha=\dfrac{400}{841}

Since \alpha lies in quadrant II, we have \cos\alpha, so

\cos\alpha=-\sqrt{\dfrac{400}{841}}=-\dfrac{20}{29}

\cos\beta=\dfrac{15}{17}\implies\sin^2\beta=1-\cos^2\beta=\dfrac{64}{289}

\beta lies in quadrant I, so \sin\beta>0 and

\sin\beta=\sqrt{\dfrac{64}{289}}=\dfrac8{17}

So

\sin(\alpha-\beta)=\dfrac{21}{29}\dfrac{15}{17}-\left(-\dfrac{20}{29}\right)\dfrac8{17}=\dfrac{475}{493}
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3 years ago
(3x + 1) &gt; -7+ 3x<br> Plz help me
Luda [366]

Answer:

0, -1

Step-by-step explanation:

This question was answered in another place since you asked it twice. Please refer to the other place that you asked the same question.

5 0
3 years ago
4 Ayla s is paid $15 20 per hour for a 34 hour week. April has the same weekly pay but works 38
VashaNatasha [74]

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Now to find Apri’s rate divide the weekly pay by hours:

516.80 / 38 =$13.60 per hour

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What is the definition of a perfect cube?
Rom4ik [11]
<span>The definition of a perfect cube is a number that is the result of multiplying an integer by itself three times
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A) 2(x+3)=x-4 <br>Could anyone help?​
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