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alexandr402 [8]
3 years ago
15

1 pound = 100 penny

Mathematics
1 answer:
luda_lava [24]3 years ago
6 0
100penny\ isn't\ 10penny\ \times\ 10penny\\\\100penny=10\ \times\ 10penny\\-------------------\\\\10penny\ \times\ 10penny=100penny^2!!!!
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Answer:  see proof below

<u>Step-by-step explanation:</u>

Use the Double Angle Identity:  cos 2A = 2cos²A - 1

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LHS = RHS:   sin A = sin A   \checkmark

 

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