Question

PLEASE HELP ASAP!!!
(Question in picture! Please include steps :))

Answer 1

90 degree - 60 degree = 30 degree always remember yn will be 90 degree

Answer 2

MN = π

Explanation:

The arc MN is calculated as

MN = circumference of circle × fraction of circle

= 2πr ×
`(60)/(360)` ( r is the radius )

= 2π × 3 ×
`(1)/(6)`

= 6π ×
`(1)/(6)`

= π