Question
Prove the identity.
sin (x+y) cos.x – cos (x+y) sinx= siny
Note that each Statement must be based on a Rule chosen from the Rule menu. To see a detailed description of a Rule, select the More Information Button to
the right of the Rule.
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Transcribed Image Text

Prove the identity. sin (x+y) cos.x – cos (x+y) sinx= siny Note that each Statement must be based on a Rule chosen from the Rule menu. To see a detailed description of a Rule, select the More Information Button to the right of the Rule.

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