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3 years ago

Please help me with this

Mathematics

1 answer:

tekilochka [14]3 years ago

8 0

Answer:

CD= 34

Step-by-step explanation:

As CD is the diameter the circle divides to half and point E is on the circle ∴∠CED =90° (angle of a semi circle)

as CD is the diameter it would be the lengthiest of all ∴ CD is hypotenuse

so $CD =\sqrt{16^{2} + \sqrt{30^{2} } } }$

= CD= $\sqrt{256+900}$

=CD= $\sqrt{1156}$

∴CD=34

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kkurt [141]

Answer:

Step-by-step explanation:

for you to find x you first have to find the adjacent of the 45° angle you can do that by using the other triangle.using the sin ratio

sin60=opposite/hypotenuse

sin60=a/7√3

a=10.5

then after you have found the adjacent you can use the cos ratio

cos45=adjacent/hypotenuse

cos45=10.5/x

cos45x/cos45=10.5/cos45

x=14.849

which is the same as 21√2 over 2

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Likurg_2 [28]

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3 years ago

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OLEGan [10]

Answer:

x² + 2x + y² + 4y = 20

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Answer:

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