Recommended Questions
- [(cos x-cos y)^(2)+(sin x-sin y)^(2)],[rArr4sin^(2)x-y]
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- (cos x+ cos y)^(2)+(sin x- sin y)^(2)=4 cos^(2)""(x+y)/(2)
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- (cos x- cos y)^(2) +( sin x- sin y)^(2)=4 sin^(2)""(x-y)/(2)
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- (cos x - cos y)^(2) + ( sin x - sin y )^(2) = 4 sin^(2)((x-y)/2)
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- (cos x + cos y ) ^(2) + (sin x - sin y ) ^(2) = 4 cos ^(2) ""(x + y ...
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- (cos x- cos y) ^(2) + (sin x - sin y) ^(2) =4 sin ^(2) "" ( x-y)/(2)
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- (cos x + cos y ) ^(2) + (sin x - sin y ) ^(2) = 4 cos ^(2) ""(x + y ...
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- (cos x- cos y) ^(2) + (sin x - sin y) ^(2) =4 sin ^(2) "" ( x-y)/(2)
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- (cos x + cos y ) ^(2) + (sin x - sin y ) ^(2) = 4 cos ^(2) ""(x + y ...
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