Question

chapter
do help using distance formula​

Answer 1

Answer:

20 sin¢/2

Step-by-step explanation:

dist = √( x¹ - x²)² + ( y¹- y²) ²

= √ ( 10cos¢ - 10)² + ( 0 - 10sin¢)²

= √ 100(cis¢ - 1 )² + 100 sin²¢

= 10 √ cos²¢ +1 -2cos¢ + sin²¢

= 10 √ 1 + 1 - 2cos¢

= 10√ 2 ( 1 - cos¢)

= 10√ 2 ( 2sin²¢/2)

= 20 sin¢/2