SOLUTION: Trigonometry help please?
show that cos(A-B)-cos(A-B)=2 sinA sin B.
Using coumpand angle and indenty for cos.
Anybody have an idea how to solve that question?
Cheers a
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Trigonometry-basics
-> SOLUTION: Trigonometry help please?
show that cos(A-B)-cos(A-B)=2 sinA sin B.
Using coumpand angle and indenty for cos.
Anybody have an idea how to solve that question?
Cheers a
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You can put this solution on YOUR website! show that cos(A-B)-cos(A-B)=2 sinA sin B.
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"show that..." implies you want to confirm an identity.
But, cos(A-B)-cos(A-B) = 0
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Using coumpand angle and indenty for cos.
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Then you say, "solve that question?"
Questions are answered.
Equations are solved.
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Try again. Make it clear what you want to do.
