A man of height 1.5 m standing on top a building of height 48.5 m view another building of height 48.5 m views another building across the square. He observes that the angle of depression of the base of the building is 40° and the angle of depression of the top of the building is 25°. Both buildings stand on the same level ground. a) Calculate the distance of the man from the base of the building across the square measured along his line of sight.

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step-by-step explanation:

1

x = 1

step-by-step explanation:

0 ÷ x = 0

0 ÷ 1 = 0

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.