General solutions

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• If \(\tan A=\tan B\), what can we say about \(A\) and \(B\)?

What about the corresponding questions for sine and cosine?

• If \(\cos A=\cos B\), what can we say about \(A\) and \(B\)?

• If \(\sin A=\sin B\), what can we say about \(A\) and \(B\)?