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(a)

Two ships are spotted from the top of a $\"\"$ foot lighthouse.

The first ship is at a $\"\"$ angle of depression from the lighthouse.

The second ship is at a $\"\"$ angle of depression from the lighthouse.

Consider the distance between first ship to lighthoue as $\"\"$ .

Consider the distance between second ship to lighthoue as $\"\"$ .

Draw a diagram using above information.

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(b)

Find the distance between the two ships.

From the smaller right angle triangle.

Trigonometric function : $\"\"$ .

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From the larger right angle triangle.

Trigonometric function : $\"\"$ .

$\"\"$

Substitute $\"\"$ in the above equation.

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The distance between two ships is $\"\"$ feet.

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(a)

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(b) The distance between two ships is $\"\"$ feet.