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jek_recluse [69]
3 years ago
10

Find the area in the first quadrant bounded by the arc of the circle described by the polar equation r = 2 sin θ + 4 cos θ. The

circle is graphed in the accompanying figure. A. 5π/2 + 4 B. 5 π C. 5 π + 8 D. 5π/2
Mathematics
1 answer:
dedylja [7]3 years ago
6 0
The radius of the circle is sqrt(5)

so the A = pi*r*r = pi * sqrt(5) * sqrt(5) = 5pi

the answer os <span>B. 5 π </span>
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kotykmax [81]
<span>When given 3 triangle sides, to determine if the triangle is acute, right or obtuse:
</span>1) Square all 3 sides.
2) Sum the squares of the 2 shortest sides.
3) Compare this sum to the square of the 3rd side.

if sum > 3rd side²   Acute Triangle
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1) 1,296   2,401   3,600
2) Sum = 3,697
3) </span><span>3,697 is greater than 3,600
Therefore, the triangle is acute.

Source:
http://www.1728.org/triantest.htm


</span>
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