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3 years ago

10

How do you convert fractions to other fractions? Like how would you convert 7/8 to 3/4??

2 answers:

algol133 years ago

7 0

You can't really get your answer like 7/8 to 3/4 because 7 doesn't go into 3. hope that helped

BabaBlast [244]3 years ago

3 0

7/8 Does not equal 3/4. 3/4 is equivalent to 6/8. But if you want to change fractions just look at 3/4 and 6/8. Just multiply the 3/4 by 2 and you will get 6/8. If the two fractions are equal it's just a matter of multiplying or dividing in order to reach it.

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Step-by-step explanation:

$\sin^2 (\frac{\pi}{4} - \alpha) = \frac{1}{2}(1 - \sin 2\alpha)$

Use the identity

$\sin^2 \theta = \dfrac{1 - \cos 2\theta}{2}$

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$\dfrac{1 - \cos [2(\frac{\pi}{4} - \alpha)]}{2} = \frac{1}{2}(1 - \sin 2\alpha)$

$\dfrac{1 - \cos (\frac{\pi}{2} - 2\alpha)}{2} = \frac{1}{2}(1 - \sin 2\alpha)$

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on the left side.

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3 years ago

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