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2 years ago

Evaluate ab for a = -2 3/4 and b= - 4/6

Mathematics

1 answer:

nataly862011 [7]2 years ago

7 0

Answer:

1 5/6

Step-by-step explanation:

ab = (-2 3/4) * (-4/6)

= ( -11/4) * ( -4/6)

= (11 * 4) / (4 * 6 )

= 11/6

= 1 5/6

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2 years ago

PLZZZZ help as soon as possible

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Answer:

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Step-by-step explanation:

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2 years ago

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Find out the answers to this

meriva

Answer:

$\tan \theta = - \frac{1}{5} = - 0.2$

$\cos \theta = 0.98$

$\sin \theta = - 0.196$

Step-by-step explanation:

It is given that $\cot \theta = - 5$ and $\theta$ is in the fourth quadrant.

So, only $\cos \theta$ will have positive value and $\sin \theta$ , $\tan \theta$ will have negative value.

Now, $\cot \theta = - 5$

⇒ $\tan \theta = \frac{1}{\cot \theta} = -\frac{1}{5}$ (Answer)

We know, that $\sec^{2} \theta - \tan^{2} \theta = 1$

⇒ $\sec \theta = \sqrt{1 + \tan^{2} \theta } = \sqrt{1 + (- \frac{1}{5} )^{2} } = 1.019$

{Since, $\cos \theta$ is positive then $\sec \theta$ will also be positive}

⇒ $\cos \theta = \frac{1}{\sec \theta} = \frac{1}{1.0198} = 0.98$ (Answer)

We know, that $\csc^{2} \theta - \cot^{2} \theta = 1$

⇒ $\csc \theta = - \sqrt{1 + \cot^{2} \theta } = - \sqrt{1 + (- 5 )^{2} } = - 5.099$

{Since, $\sin \theta$ is negative then $\csc \theta$ will also be negative}

⇒ $\sin \theta = \frac{1}{\csc \theta} = \frac{1}{- 5.099} = - 0.196$ (Answer)

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2 years ago

What is 13/2 - 2/13.

skad [1K]

13/2 = 6.5
2/13 = 015
6.5-0.15 = 6.35

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2 years ago