A boy

A boy of height 1.7m is standing 30m away from the flagstaff on the same level ground. He observes that the angle of deviation of the top of flagstaff is 30 degrees. Calculate the height of flagstaff.

Correct answer:

h =  19.0205 m

Step-by-step explanation:

a=30 m b=1.7 m A=30  tanA=x/a  h=b+a tan(A rad)=b+a tan(A π180 )=1.7+30 tan(30 3.1415926180 )=19.021=19.0205 m



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