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3 years ago

Question 9 of 10

Mathematics

1 answer:

Sophie [7]3 years ago

8 0

Answer:

Step-by-step explanation:

its a triangle all sides are equal. so it would be d-60 degrees

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JK and LM are perpendicular diameters of a circle. They are each 12 inches long. What is the approximate length of chord LK?

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I think the approximate length og chord Lk is around 8.5 inches long

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vagabundo [1.1K]

Answer:

A) Linear Expression

Step-by-step explanation:

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Angles α and β are angles in standard position such that: α terminates in Quadrant II and sinα = 3/5, β terminates in Quadrant I

777dan777 [17]

We are given

Angles α and β are angles in standard position

and

α terminates in Quadrant II

β terminates in Quadrant I

and we have

$sin(\alpha)=\frac{3}{5}$

we can use triangle and find cos(α)

we get

$cos(\alpha)=-\frac{4}{5}$

and we have

$cos(\beta)=\frac{4}{5}$

we can draw triangle

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now, we can use formula

$cos(\alpha+\beta)=cos(\alpha)cos(\beta)-sin(\alpha)sin(\beta)$

now, we can plug values

$cos(\alpha+\beta)=-\frac{4}{5}\times \frac{4}{5}-\frac{3}{5}\times \frac{3}{5}$

now, we can simplify it

$cos(\alpha+\beta)=-\frac{16}{25}-\frac{9}{25}$

$cos(\alpha+\beta)=-\frac{(16+9)}{25}$

$cos(\alpha+\beta)=-\frac{25}{25}$

$cos(\alpha+\beta)=-1$ ...............Answer

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3 years ago

Tom asked his Granny how old she was. Rather than giving him a straight answer, she replied: "I have 6 children, and there are 4

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Answer: 58 years old

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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