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2 years ago

Find the distance round the semi circle with a diameter of35 cm

Mathematics

2 answers:

mote1985 [20]2 years ago

5 0

Answer: a semi circle is half a circle so 35 divided by 2 is 17.5

Step-by-step explanation:

8090 [49]2 years ago

4 0

Answer:

54.91 cm ² is the perimeter

formula =2 × 3.14× r (half the diameter)× 0.5

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Suppose that theta is an angle in standard position whose terminal side Intersects the unit circle at (-11/61, -60/61)

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Answer:

The exact values of the tangent, secant and cosine of angle theta are, respectively:

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Step-by-step explanation:

The components of the unit vector are $x = -\frac{11}{61}$ and $y = -\frac{60}{61}$ . Since $r = 1$ , then $x = \cos \theta$ and $y = \sin \theta$ . By Trigonometry, tangent and secant can be calculated by the following expressions:

$\tan \theta = \frac{\sin \theta}{\cos \theta} = \frac{y}{x}$

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Now, the exact values of the tangent, secant and cosine of angle theta are, respectively:

$\cos \theta = -\frac{11}{61}$

$\tan \theta = \frac{-\frac{60}{61} }{-\frac{11}{61} } = \frac{60}{11}$

$\sec \theta = \frac{1}{-\frac{11}{61} } = -\frac{61}{11}$

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Find the distance round the semi circle with a diameter of35 cm​

Find the distance round the semi circle with a diameter of35 cm