Find the measure of angle 3
M
1989
3
P

angle 3 = 99°

Step-by-step explanation:

IF PQ is tangent to the circle, then the diameter intersecting P creates an angle with the chord of (198 - 180)/2 = 9°. This angle must be added to 90° as PQ is a tangent

25.3

step-by-step explanation:

1st step

add 3+6

=9

multipy 9*3

=37

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.