Choose a justification for each step in the derivation of the sine difference identity.
2 answers:
Answer:
Step 1:
✔ Cofunction identity
Step 5:
✔ Sine difference identity
Step 6:
✔ Cofunction Identity
Step 7:
✔ Cosine function is even, sine function is odd.
Step-by-step explanation:
Answer:
Step 1: Cofunction identity
Step 5: Cosine difference identity
Step 6: Cofunction identity
Step 7: Cosine function is even, sine function is odd
Step-by-step explanation:
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Answer:
Step-by-step explanation:
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Answer:
It is C
Step-by-step explanation:
Answer:
Step-by-step explanation:
To simplify, we group all like terms by addition and subtraction
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