3 years ago

Help please ASAP. ..................,,.,,..,,

Mathematics

1 answer:

fredd [130]3 years ago

8 0

Answer:

2x(3+1)

Step-by-step explanation:

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Answer:

Option B is correct

Step-by-step explanation:

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=> Option B is correct

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3 years ago

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3 years ago

Will give brainliest!!

yawa3891 [41]

Answer:

$r=\frac{9\cos \theta}{\sin^2 \theta}$

Step-by-step explanation:

The given equation in rectangular coordinates is;

$y^2=9x$

We use the relation;

$x=r\cos \theta$

and

$y=r \sin \theta$

This implies that;

$(r \sin \theta)^2=9(r \cos \theta)$

$r^2 \sin^2 \theta=9r \cos \theta$

Divide through by r to get;

$r \sin^2 \theta=9\cos \theta$

Divide both sides by $\sin^2 \theta$

$r=\frac{9\cos \theta}{\sin^2 \theta}$

8 0

4 years ago