A tower is 20 meters tall. What is the length of the shadow cast by the tower when the sun's elevation is 45°?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 20 m.
Height of tower (AB) = 20 m
Shadow length = BC
tan 45° = AB/BC
⇒ 1 = 20/BC
⇒ BC = 20 m