Prove that sin(A+B)=sinAcosB+sinBcosA [satisfy all angles]?

👨🏻‍🏫 學術台數學

2011-07-28 2:52 pm

Prove that sin(A+B)=sinAcosB+sinBcosA [satisfy all angles, from -infinitive to +infinitive, not only for the acute angle]

回答 (1)

2011-07-28 2:54 pm

✔ 最佳答案

http://mathworld.wolfram.com/TrigonometricAdditionFormulas.html

this may help you..:) :)

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