• anonymous
Thanks for helping! 6. Prove the identity: (cosx+cosy)^2+(sinx-siny)^2=2+2cos(x+y) Part I: Complete the left-hand column of the table below following the steps indicated in the right-hand column. (12 points) Given on the left side of the original problem (cosx+cosy)^2+(sinx-siny)^2 Expand each squared term Simplify the expression Apply the Pythagorean identity Apply the addition formula for cosine
Mathematics
• Stacey Warren - Expert brainly.com
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