Question

a boy of height 1.7m is standing 30m away from a flagstaff on the same level ground . He observes that the angle of elevation of the top of the flagstaff is 30 degrees. calculate the height of the flagstaff

Answer 1

In ∆ ABC

tan 30 = BC/AC

1/√3 = h / 30

30 / √3 = h

30 / √3 × √3/√3 = h

10√3 = h

10 × 1.73 = h

17.3 = h


Height of flagstaff :- BC + CD

17.3 + 1.7

= 19 m !


Height of flagstaff is 19m

Answer 2

Answer:

Step-by-step explanation: