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secondary 4 | A Maths
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please explain to me how to do this thank you
Date Posted: 4 years ago
Views: 230
Part i requires you to understand that
1. The minute hand is 50 cm, so it can encircle an area of radius 50 cm, so the maximum distance it can go from the starting vertical line is 50 cm (when the hour hand points towards "3" or "9"), so a is 50.
2. It takes 60 full minutes for the minute hand to travel a full 360 degrees, so period is 60 minutes for every 2pi rotation for one complete cycle, so b is 2pi divided by 60.
1. The minute hand is 50 cm, so it can encircle an area of radius 50 cm, so the maximum distance it can go from the starting vertical line is 50 cm (when the hour hand points towards "3" or "9"), so a is 50.
2. It takes 60 full minutes for the minute hand to travel a full 360 degrees, so period is 60 minutes for every 2pi rotation for one complete cycle, so b is 2pi divided by 60.
Part ii I do later if no one else has responded
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Use a sine/cosine graph to help you visualise whenever provided, especially for periodic interval questions.
Date Posted:
4 years ago
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