Question

What are the 4 answers here?

Answer 1

4) No, 5) Yes, 6) 15.58, 7) 11.46

-----------------------------------

Tangent is perpendicular to radius of circle.

The formed triangle is then a right triangle.

Use Pythagorean to verify.

Question 4

Check Pythagorean if is correct:

• 20² = (8.5*2)² + 12²
• 400 = 433

False equality, the answer is No.

Question 5

Check if Pythagorean is correct:

• (9 + 8)² = 8² + 15²
• 289 = 289

True equality, the answer is Yes.

Question 6

Let the missing side be x.

Apply Pythagorean to find it:

• x² = 17² - 6.8²
• x² = 242.76
• x = √242.76
• x = 15.58 (rounded)

Question 7

Let the missing side be x.

Apply Pythagorean to find it:

• x² = (7.5 + 5)² - 5²
• x² = 131.25
• x = √131.25
• x = 11.46 (rounded)