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Home Q & A Board Science-Related Homework Help Mathematics
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ferncaz95 ferncaz95
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10 years ago
How do I prove the sine, cosine, and tangent sum formulas for all real values, and derive special applications of the sum formulas (e.g., double angle, half angle).
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10 years ago
If you access to a good library, find the book Pre calculus by James Stewart, 3rd Edition. (Thats the one I got).
In the section 7.2 you can find the proof. They are long and have graphs that go with it.
GOOD LUCK.
There are sites where you can find the textbooks also on pdf, for you to copy.
If you can´t find those sites ask me at my email.
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fihashimfihashim
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10 years ago
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