Grade 12th passTrigonometry
x+y=z then cos²x+cos²y+cos²z -2cosx cosy cosz is equal
1 Answer
Saurabh Koranglekar
Dear student
Consider x= y = pi/4
Z= pi/2
Ans is 1
Regards
Consider x= y = pi/4
Z= pi/2
Ans is 1
Regards
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