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mafiozo [28]
3 years ago
7

Need with number 7!

Mathematics
1 answer:
topjm [15]3 years ago
7 0

Answer: 6

SOLUTION

∵segment\frac{}{AB}is tangent to the circle at point C.

∴∠MCA=∠MCB=90°

Suppose \frac{}{MC} =x

From the Pythagorean theorem

MA²=9²+x²

MB²=4²+x²

∴MA²+MB²=AB²

i.e. x^{2} +9^{2} +4^{2} +x^{2} =(9+4)^{2} \\2x^{2} +97=169\\2x^{2} =72\\x^{2} =36\\x=6

We conclude that x=6=\frac{}{MC}

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5sinA=4, find the value of tanA.​
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Answer: tan A=4/3

Step-by-step explanation:

Theo đề ta có: 5sinA=4 suy ra: sinA=4/5, mà ta đã biết là: sinA= cạnh đối/cạnh huyền, suy ra: cạnh đối của góc A =4, cạnh huyền =5

Áp dụng định lí py ta go ta đc:

5^2=4^2+x^2

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Vậy cạnh kề của góc A=3

Mà tanA = cạnh đối/cạnh kề

Vậy giá trị của tanA=4/3

(bạn vẽ hình ra thì có thể nhìn rõ hơn đấy, cảm ơn bạn đã tham khảo câu trả lời của mik)

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You are standing at point C, 45 feet from the Point State Park fountain in Pittsburgh, PA. The distance from you to a point of t
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The tangent line DC is perpendicular to the radius of the park

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<h3>How to determine the distance AC?</h3>

To calculate the distance AC, we start by calculating the length of AB using:

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Read more about line of tangents at:

brainly.com/question/6617153

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