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PLEASE HELP DUE SOON!!! TRIGONOMETRIC IDENTITIES
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PLEASE HELP DUE SOON!!! TRIGONOMETRIC IDENTITIES

PLEASE HELP DUE SOON!!! TRIGONOMETRIC IDENTITIES-example-1
User Rotsor
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Answer:

Proved

Explanation:


cos((x)) cos((y)) [tan((x))+tan((y))]\\=cos((x))cos((y))*[(sin((x)))/(cos((x)))+(sin((y)))/(cos((y)))]\\\\\\\\=cos((x))cos((y))*(sin((x)))/(cos((x)))+cos((x))cos((y))*(sin((y)))/(cos((y)))\\\\\\\\=cos((y))*sin((x))+cos((x))sin((y))\\\\=sin((x+y))

User Ronaldo Cano
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