3 years ago

Which pair of slopes could represent perpendicular lines?

Mathematics

1 answer:

Dmitry_Shevchenko [17]3 years ago

5 0

Answer:

1/2, 2/4

Step-by-step explanation:

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3 years ago

If sin square theta = 0.75, then cos =

sergeinik [125]

Answer:

$\cos\theta=\pm0.5$

Step-by-step explanation:

Given:

$\sin^2\theta=0.75$

To find $\cos\theta$

Using trigonometric relations for sums and differences of squares of the ratios.

We know:

$\sin^2\theta+\cos^2\theta =1$

Plugging in $\sin^2\theta=0.75$ in the above relation.

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Subtracting both sides by 0.75.

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3 years ago

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Step-by-step explanation:

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x aris is stright .right?

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