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x+y=z then cos²x+cos²y+cos²z -2cosx cosy cosz is equal

x+y=z then cos²x+cos²y+cos²z -2cosx cosy cosz is equal

Grade:12th pass

1 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
2 years ago
Dear student

Consider x= y = pi/4

Z= pi/2

Ans is 1

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