Prove the identity? cos(x-y)sinx-sin(x-y)cosx=siny
• Identify the problem statement.
• Correctly use appropriate identities and/or theorems.
• Correctly use the algebraic process.
• Identify the final statement.
• Identify the problem statement.
• Correctly use appropriate identities and/or theorems.
• Correctly use the algebraic process.
• Identify the final statement.
1 Answer
Apr 19, 2018
See below
Explanation:
Cosine difference identity:
Sine difference identity:
Simplify:
Factor out
Apply the Pythagorean identity: