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2 years ago

What is the name of the shape graphed by the function r = 2 - costheta

Mathematics

1 answer:

Afina-wow [57]2 years ago

8 0

Answer:

limaçon (no inner loop)

Step-by-step explanation:

The equation of a limaçon is written generically as ...

r = b + a·cos(θ)

For b=2 and a=1, this would put the flat side on the left. Rotating it 180° can be accomplished by adding or subtracting π from θ. Then the equation can be ...

r = 2 + cos(θ-π) . . . . or ...

r = 2 - cos(θ)

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Find the surface area of the composite figure

nataly862011 [7]

solution given:

For Cuboid

length[l]=11mm

breadth [b]=9mm

height[h]=6mm

For semi cylinder

height[H]=11mm

radius[r]= $\frac{9}{2}=4.5mm$

Now

Totalsurface area=2(lb+bh+lh)+½(2πr(r+H))-l*b[/tex]

:2(11*9+9*6+11*6)+22/7*4.5(4.5+11)-11*9

:438+219.2-99

:558.2mm²

Here area of base is subtracted as it is not included.

Total surface area of composite figure is :558.2mm².

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UNO [17]

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sp2606 [1]

Answer:

48/5

Step-by-step explanation:

1.25x=12

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Please help! Solve the following:

mihalych1998 [28]

Answer:

n=10.

Step-by-step explanation:

$\frac{45}{n^{2}-3n-4 }$ - $\frac{3}{n-4}$ = $\frac{2}{n+1 }$

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VashaNatasha [74]

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