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babydolltia28
27.06.2020 •
Mathematics
What is the arc length of AB?
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Ответ:
Length of the given arc AB = 7.33 in.
Step-by-step explanation:
Formula to calculate the arc length is,
Arc length =![\frac{\theta}{360}(2\pi r)](/tpl/images/0695/6704/44e15.png)
Where θ is the measure of central angle subtended by the arc.
And 'r' = radius of the circle
By substituting the values given in the formula,
Length of arc AB =![\frac{60}{360}\times (2\pi )\times (7)](/tpl/images/0695/6704/2c1e4.png)
=![\frac{14\pi}{6}](/tpl/images/0695/6704/fbd01.png)
=![\frac{7\pi}{3}](/tpl/images/0695/6704/99e32.png)
= 7.33 in.
Therefore, length of the given arc AB = 7.33 in.
Ответ:
x = 136º
Step-by-step explanation:
This is true because of the vertical angles rule. With vertical angles, they always equal each other.