The angle of depression of the foot of a building from the top of a tower 30 m away is 30°.
How high is the tower?
The angle of depression of the foot of a building from the top of a tower 30 m away is 30°.
How high is the tower?
1). $10\sqrt{3}$ m
2). $20\sqrt{3}$ m
3). 30 m
4). 20 m
1 answers
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