A boat is moving away from an observation tower. It makes an angle of depression of 60° with an observer's eye when at a distance of 50m from the tower. After 8 sec., the angle of depression becomes 30°. By assuming that it is running in still water, the approximate speed of the boat is

Question

নিচের অপশন গুলা দেখুন

• 33 km/hr
• 50 km/hr
• 45 km/hr
• 42 km/hr

Answer 1

সঠিক উত্তর হচ্ছে: 45 km/hr

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