3 years ago

Determine if line AB is tangent to the circle.

Mathematics

1 answer:

Charra [1.4K]3 years ago

6 0

Answer:

7) No

8) Yes

Step-by-step explanation:

Tangent lines are perpendicular to the radius lines at the point of intersection. So we just need to check if these are right triangles.

7) c² = a² + b²

20² = 12² + 14²

400 = 340

8) c² = a² + b²

13² = 7.8² + 10.4²

169 = 169

Yes

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Answer:

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(b) $\frac{20i+21}{29}$

Step-by-step explanation:

We have to perform division

(a) $\frac{1-2i}{2i}$

So after division

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(b) We have given expression $\frac{5-2i}{5+2i}$

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After rationalizing

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4 x^5 - 6 x^4 + 4 x³ - 6 x² =

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