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if x + y = z, then cos^2x + cos ^2y + cos^2z –2 cosx cosy cosz is

if x + y = z, then cos^2x + cos^2y + cos^2z –2 cosx cosy cosz is

Grade:12

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
3 years ago
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