Math, asked by sonu775, 1 year ago

show that 1-tan²A÷1+tan²A=2cos² A-1

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Answered by purnimasravanip42ezr

2

https://hi-static.z-dn.net/files/d94/6c390b182c7654d965b03fa9958f48f5.jpg

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sonu775: thank u very much

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