The angle of elevation of the top of a 70 feet tall tower from the initial position of a person on the ground was 30°. She walked towards the tower in a manner that the foot of the tower, her initial position and the final position were all in the same straight line. If she walked 140(√3/3) feet from her initial position, what was the angle of elevation of the top of the tower from her final position?
tan B = 70/AB tan 30˚ = 70/AB => 1/√3 = 70/AB AB = 70√3 Now, => AD = AB - BD => AD = 70√3 - 140√3/3 => AD = 70√3/3 Now, => tan θ = 70/(70√3/3) = 3/√3 => tan θ = √3/1 = tan 60˚
Versatile
Obsession with writing.
Select the most appropriate ANTONYM of the given word.
Timid
Unique
My favourite candidate gave up before the contest was even closed.
A) Prance B) Bloc C) Archaic D) Caper
...A Government by the Rich
A strongbox or small chest for holding valuables.
Select the most appropriate synonym of the given word.
PERISH
19. 1) falter 2) dawdle 3) Hesitate
4) Connive5) None of these
...
