A security guard standing on the top of a 100 m high lighthouse sees a

1.	A security guard standing on the top of a 100 m high lighthouse sees an enemy ship coming towards it. It was initially at an angle of depression of 35∘ but after 10 minutes the angle of depression changes to 55∘. Find the speed of enemy ship. [tan 55∘=1.42, tan 35∘=0.7]
Answer» A security guard standing on the top of a 100 m high lighthouse sees an enemy ship coming towards it. It was initially at an angle of depression of $35^{\circ}$ but after 10 minutes the angle of depression changes to $55^{\circ}$ . Find the speed of enemy ship. $[t a n 55^{\circ} = 1.42, t a n 35^{\circ} = 0.7]$

A security guard standing on the top of a 100 m high lighthouse sees an enemy ship coming towards it. It was initially at an angle of depression of 35∘ but after 10 minutes the angle of depression changes to 55∘. Find the speed of enemy ship. [tan 55∘=1.42, tan 35∘=0.7]

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A security guard standing on the top of a 100 m high lighthouse sees an enemy ship coming towards it. It was initially at an angle of depression of $35^{\circ}$ but after 10 minutes the angle of depression changes to $55^{\circ}$ . Find the speed of enemy ship. $[t a n 55^{\circ} = 1.42, t a n 35^{\circ} = 0.7]$

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A security guard standing on the top of a 100 m high lighthouse sees an enemy ship coming towards it. It was initially at an angle of depression of 35∘ but after 10 minutes the angle of depression changes to 55∘. Find the speed of enemy ship. [tan 55∘=1.42, tan 35∘=0.7]

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