When the sun's altitude changes from 30 to 60 , the length of the shadow of a tower decreases by 70m. What is the height of the tower?

When the sun's altitude changes from 30 to 60 , the length of the sha

1.	When the sun's altitude changes from 30 to 60 , the length of the shadow of a tower decreases by 70m. What is the height of the tower?
A.	60.6 m
B.	140 m
C.	35 m
D.	20.2 m
Answer» B. 140 m

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When the sun's altitude changes from 30 to 60 , the length of the shadow of a tower decreases by 70m. What is the height of the tower?

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