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secondary 4 | A Maths
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How to find angle a
Date Posted: 7 years ago
Views: 505
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TIP: Questions as such often become simpler instantly once we recognize certain lengths to be the radius of a circle. (Any line segment joining a circle from the circumference to its centre is its radius!) In this case, we can work with BC being a radius of the larger circle. The rest is manipulation and solving of equation.
TIP 2: you may easily substitute the answer back into equations (1) and (2) to CHECK if one is indeed 30% of the other!
TIP 2: you may easily substitute the answer back into equations (1) and (2) to CHECK if one is indeed 30% of the other!
Date Posted:
7 years ago
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