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nomood
06.02.2020 •
Mathematics
find the equation(s) of the tangent line(s) to the graph of the curve y = x3- 11x through the point (1, -11) not on the
graph. (enter your answers as a comma-separated list of equations.)
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Ответ:
The area of shaded region is 226.4 meter squared.
Step-by-step explanation:
Radius of the circle = r =18.6 m
Angle subtended by chord![\theta = 123^o](/tpl/images/0470/9033/59359.png)
Area of sector =![\frac{\theta }{360^o}\pi r^2](/tpl/images/0470/9033/84db9.png)
In ΔOAB
∠A+∠B+∠O= 180°
2∠A+123°= 180°(∠A=∠B, isosceles triangle)
∠A=∠B=28.5°
AC=BC (Radius of the circle bisects the chord at right angle.)...(1)
In ΔOAC
OC = 8.87 m
AC = 16.34 m
AB = AC+AB=16.34 m+16.34 m=32.68 m (from (1))
Area of the ΔOAB =![\frac{1}{2}\times OC\times AB](/tpl/images/0470/9033/60a53.png)
=![\frac{1}{2}\times 8.87 m\times 32.68 m=144.93 m^2](/tpl/images/0470/9033/6170a.png)
Area of segment = Area of sector - Area of triangle:
The area of shaded region is 226.4 meter squared.