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www.nayanainternational.com
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1st of all I want to give a short introduction of trigonometry. In this section i shall give you very easily understandable wo... -
1. (α+в)²= α²+2αв+в² 2. (α+в)²= (α-в)²+4αв 3. (α-в)²= α²-2αв+в² 4. (α-в)²= (α+в)²-4αв 5. α² + в²= (α+в)² - 2αв. 6. α² + в²= (α-в)² + 2...
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