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2 years ago

9

If 3a=27, what is the value of 6a+3?

1 answer:

Luba_88 [7]2 years ago

7 0

57 because 3 times 9 equals 27

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Find the exact value of each expression.<br> sin0 , if cos 0 =3/5 and 270° ≤0 ≤360°

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$\text{Given that,}\\\\~~~~~~~~\cos \theta = \dfrac 35\\\\\implies \cos^2 \theta = \dfrac 9{25}\\\\\implies 1-\sin^2 \theta = \dfrac{9}{25}\\\\\implies \sin^2 \theta = 1-\dfrac{9}{25}\\\\\implies \sin^2 \theta = \dfrac{16}{25}\\\\\implies \sin \theta = \pm\sqrt{\dfrac{16}{25}}\\\\\implies \sin \theta = \pm\dfrac 45\\\\\text{Given that,}~ 270^{\circ} \leq \theta \leq 360^{\circ}, \text{So}~ \theta ~ \text{lies in fourth quadrant.}\\\\$

$\text{Which means that}~ \sin \theta ~ \text{will be negative.}\\\\\text{Hence,}~ \sin \theta = -\dfrac 45$

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Step-by-step explanation:

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2 years ago

4 whols and 4/5 divided by 4/5

Andre45 [30]

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Step-by-step explanation:

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