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Grade: 10

                        

if cos alpha + cos beta + cos gamma = sin alpha + sin beta + sin gamma = 0 , prove that cos 2 alpha + cos 2 beta + cos 2 gamma = sin 2 alpha +sin 2 beta +sin 2 gamma

4 years ago

Answers : (1)

Saurabh Koranglekar
askIITians Faculty
10233 Points
							Dear student

Please see that there are 2 equations but three variables please check and repostif there is a possiblilityof correction
2 years ago
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