# Solution: Determine the speed of the ship if the lighthouse is known to be 50 meters above sea level

The captain of a ship views the top of a lighthouse at an angle of 60° with the horizontal at an elevation of 6 meters above sea level. Five minutes later, the same captain of the ship views the top of the same lighthouse at an angle of 30° with the horizontal.

#### Problem Statement: ECE Board November 1991

The captain of a ship views the top of a lighthouse at an angle of 60° with the horizontal at an elevation of 6 meters above sea level. Five minutes later, the same captain of the ship views the top of the same lighthouse at an angle of 30° with the horizontal. Determine the speed of the ship if the lighthouse is known to be 50 meters above sea level.
• A. 0.265 m/sec
• B. 0.155 m/sec
• C. 0.169 m/sec
• D. 0.210 m/sec

#### Problem Answer:

The speed of the ship is 0.169 m/sec.

Solution:

### Latest Problem Solving in Plane Trigonometry Problems

More Questions in: Plane Trigonometry Problems

#### Search! Type it and Hit Enter

 We educate thousands of students a week in preparation for their licensure examinations. We provide professionals with materials for their lectures and practice exams. To help us go forward with the same spirit, contribution from your side will highly appreciated. Thank you in advance. Option 1 : \$5 USD Option 2 : \$10 USD Option 3 : \$15 USD Option 4 : \$20 USD Option 5 : \$25 USD Option 6 : \$50 USD Option 7 : \$100 USD Option 8 : Other Amount

## Contact Form

Name

Email *

Message *

Powered by Blogger.
Javascript DisablePlease Enable Javascript To See All Widget