Math, asked by ashmitsingh718p6ehon, 11 months ago

65 class 10 triG0.........

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Answered by ALTAF11

16

Step-by-step explanation:

( a + b + c )² = a² + b² + c² + 2ab + 2bc + 2ca

(a + b - c )² = a² +b² + c² + 2ab - 2bc - 2ca

Sin²x + Cos²x = 1

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