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Don'tknowtrig
Questions (3)
Thank you Reiny for the last question! :)
If you or anyone else could help me with this other question, I'd really appreciate it!
2 answers
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Derive this identity from the sum and difference formulas for cosine:
sinasinb=1/2[cos(a-b)cos(a+b)] Start with the right-hand
1 answer
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prnt.sc/jnp0iz
PLEASE HELP ME!!!!!
2 answers
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Answers (2)
OMLLL! Thank you! Ily. :*
Derive this identity from the sum and difference formulas for cosine: sinasinb=1/2[cos(a-b)cos(a+b)] Start with the right-hand side since it is more complex. Calculations: _____ _____ _____ Reasons: _____ _____ _____
