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(Solved): Verify the identity. \[ \cos (-x)-\sin (-x)=\cos x+\sin x \] ...


Verify the identity. \[ \cos (-x)-\sin (-x)=\cos x+\sin x \]

Verify the identity. \[ \cos (-x)-\sin (-x)=\cos x+\sin x \]


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Given- cos?(?x)?sin?(
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