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A man on the top of a tower, standing on...

A man on the top of a tower, standing on the Sea-shore, finds that a boat coming towards him takes 10 minutes for the angle of depression to,change from `30^@` to `60^@`. How soon the boat reach the sea-Shore?
समुद्र के किनारे एक टॉवर के शीर्ष पर खड़ा व्यक्ति यह पाता है कि उसकी तरफ आ रही नाव का अवनमन कोण 10 मिनट में `30^@` to `60^@` हो जाता है। नाव समुद्र के किनारे देर में आ जाएगी?

A

5 minutes

B

7 minutes

C

10 minutes

D

15 minutes

Text Solution

Verified by Experts

The correct Answer is:
A
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