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zhenek [66]
3 years ago
13

Sarah had a sheet of paper that was 3 inches long and 7 inches wide. What is the perimeter of the paper

Mathematics
2 answers:
notsponge [240]3 years ago
4 0

Answer:

20 square inches

Step-by-step explanation:

Illusion [34]3 years ago
3 0

Answer: 20

Step-by-step explanation:

(3+7)*2 = 20

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Using a trigonometric identity, it is found that the values of the cosine and the tangent of the angle are given by:

  • \cos{\theta} = \pm \frac{2\sqrt{2}}{3}
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<h3>What is the trigonometric identity using in this problem?</h3>

The identity that relates the sine squared and the cosine squared of the angle, as follows:

\sin^{2}{\theta} + \cos^{2}{\theta} = 1

In this problem, we have that the sine is given by:

\sin{\theta} = \frac{1}{3}

Hence, applying the identity, the cosine is given as follows:

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

\cos^2{\theta} = 1 - \left(\frac{1}{3}\right)^2

\cos^2{\theta} = 1 - \frac{1}{9}

\cos^2{\theta} = \frac{8}{9}

\cos{\theta} = \pm \sqrt{\frac{8}{9}}

\cos{\theta} = \pm \frac{2\sqrt{2}}{3}

The tangent is given by the sine divided by the cosine, hence:

\tan{\theta} = \frac{\sin{\theta}}{\cos{\theta}}

\tan{\theta} = \frac{\frac{1}{3}}{\pm \frac{2\sqrt{2}}{3}}

\tan{\theta} = \pm \frac{1}{2\sqrt{2}} \times \frac{\sqrt{2}}{\sqrt{2}}

\tan{\theta} = \pm \frac{\sqrt{2}}{4}

More can be learned about trigonometric identities at brainly.com/question/24496175

#SPJ1

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Divide total km by the km in the scale:

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There  are 4 As and 3 Bs, so the ratio of Bs to the total number of As and Bs is ...

... (count of Bs) : (count of As + count of Bs)

... = 3 : (4 + 3)

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Expressed as a fraction, this is

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3 years ago
if you divide a five-digit number by a one-digit number, what is the largest possible remainder you can get ?
solmaris [256]
99999/8 has a remainder of 7
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3 years ago
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