Send any few trigonometry formulas.... Please mark me as BRAINLEST answers please i hope u will help me and reach me to EXPERT. i will give 15 points please
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- (a+b) ² = a²+b²+2ab
- (a-b)² = a²+b²-2ab
- a²-b² = (a+b) (a-b)
- (a+b+c) ² = a²+b²+c²-2(ab+bc+ca)
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